Answer: To find the total area of the grass that Yuri's dad needs to fertilize, we need to calculate the area of the back yard and the area of the front yard, and then add them together.
Area of the back yard:
The back yard measures 55 feet by 30 feet, so the area is:
55 feet x 30 feet = 1650 square feet
Area of the front yard:
The front yard is a square with a length of 42 feet on each side, so the area is:
42 feet x 42 feet = 1764 square feet
Total area:
To find the total area, we add the area of the back yard and the area of the front yard:
1650 square feet + 1764 square feet = 3414 square feet
Therefore, Yuri's dad needs to fertilize a total area of 3414 square feet.
Step-by-step explanation:
sunset lake is stocked with 2500 rainbow trout and after 1 year the population has grown to 7050. assuming logistic growth with a carrying capacity of 25000, find the growth constant , and determine when the population will increase to 12900.
The growth constant is 0.69 and the population will increase to 12900 after approximately 3.7 years.
We have, Sunset Lake is stocked with 2500 rainbow trout and after 1 year the population has grown to 7050. Assuming logistic growth with a carrying capacity of 25000,
The logistic growth model is given by the equation
dN/dt=rN[(K-N)/K]
where, dN/dt = rate of change of population with respect to time,
N = population size at time t,
r = intrinsic rate of natural increase (growth constant),
K = carrying capacity.
The population size, "N" after 1 year = 7050
The initial population, "N₀" = 2500
The carrying capacity, K = 25000
We can use the following formula to find the value of the growth constant,
r = 2.303/t{ln(N_t/N₀) }........... (1)
Where, t = time taken for the population to increase from N_0 to N_t= 1 year (given)
Substituting the given values in equation (1), we get
r = 2.303/1 ln(7050/2500) ⇒ 0.688 ≈ 0.69
The value of the growth constant is 0.69.
Now, we can use the logistic growth equation to find the time required for the population to reach 12900.
dN/dt=rN[(K-N)/K]
Given, N₀ = 2500 and K = 25000
Differentiating both sides with respect to t,
dN/dt = rN[(K-N)/K] + Ndr/dt
Substituting the values of N, r, and K in the above equation, we get,
dN/dt= 0.69N[(25000-N)/25000] + N{dN/dt}
Let the population N become 12900 at time t = t₁
Therefore, at time t = 0, the population N₀ = 2500
Also, at time t = 1, the population N₁ = 7050
Substituting these values in the above equation, we get,
dN/dt= 0.69N[(25000-N)/25000] + N₁
dN/dt= 0.69(2500)[(25000-2500)/25000] + N₁
Solving for N₁, we get, N₁ = 7825
Substituting N₁ = 7825 in the above equation,
dN/dt= 0.69(7825)[(25000-7825)/25000] + N₁
dN/dt= 3263.25/1.69 ⇒ 1930.4
Now, to find t1, we can use the following formula;
ln[(K-N₁)/(K-N₀)] = rt₁
Substituting the given values, we get,
ln[(25000-12900)/(25000-2500)] = 0.69t₁
On solving for t₁, we get;
t₁ = ln[(1575/22500)]/0.69 ≈ 3.7 years
Hence, the population will increase to 12900 after approximately 3.7 years.
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Which equation is true when x = 3?
Group of answer choices
8x = 28
x - 19 = 16
28 + x = 25
x/3 = 1
The equation that is true when x is equal to 3 is (x/3) = 1. By substituting the given x value and simplifying the equation we can solve.
What is division?Division is a mathematical operation that is used to split a quantity or value into equal parts or groups. It is one of the four basic arithmetic operations, along with addition, subtraction, and multiplication.
According to question:The equation that is true when x = 3 is:
x/3 = 1
Substituting x = 3, we get:
3/3 = 1
Which is true, since 3 divided by 3 is equal to 1.
The other equations:
8x = 28: If we substitute x = 3, we get 8(3) = 24, which is not equal to 28, so this equation is not true when x = 3.x - 19 = 16: If we substitute x = 3, we get 3 - 19 = -16, which is not equal to 16, so this equation is not true when x = 3.28 + x = 25: If we substitute x = 3, we get 28 + 3 = 31, which is not equal to 25, so this equation is not true when x = 3.To know more about division visit:
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Use the commutative or associative property to simplify the expression. -(1)/(9)(13x)
Answer:
The given expression is:
-(1)/(9)(13x)
We can use the commutative property of multiplication to rearrange the order of the factors:
-(1)/(13x)(9)
Now, we can use the associative property of multiplication to group the factors in any way we want:
-(1/13)(1/x)(1/9)
This is the simplified expression using the commutative and associative properties of multiplication.
The height of a satellite above Earth over a certain period of time is described by the function shown.
f(x)=2x2−16x+800
In this function, x = the time in hours and f(x) = the height in kilometers. What is the minimum height of the satellite during this period of time?
Step-by-step explanation:
To find the minimum height of the satellite during the given time period, we need to find the vertex of the parabolic function f(x) = 2x^2 - 16x + 800.
The vertex of a parabola with equation f(x) = ax^2 + bx + c is given by the formula:
x = -b / 2a and f(x) = -b^2 / 4a + c
In this case, a = 2, b = -16, and c = 800. Substituting these values into the formula, we get:
x = -(-16) / 2(2) = 4
f(x) = -(-16)^2 / 4(2) + 800 = 848
Therefore, the minimum height of the satellite during the given time period is 848 kilometers, and it occurs after 4 hours of flight time.
describe the complement of the given event. 71% of a person's credit card purchases are seventy dollars or more.
The complement of the given event is that 29% of the person's credit card purchases are less than seventy dollars.
To describe the complement of the given event, we need to first understand what complement means in probability theory. The complement of an event is the set of outcomes that are not included in the event.
So, the given event is that 71% of a person's credit card purchases are seventy dollars or more. This means that 100% - 71% = 29% of the person's credit card purchases are less than seventy dollars. This is the complement of the given event.
Hence, the complement of the given event is that 29% of the person's credit card purchases are less than seventy dollars.
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According to the map on the left, Central Park is about 50 blocks long by 9 blocks wide. What is the approximate area of the park? Show your work.
The approximate area of the park is given as follows:
450 blocks squared.
How to obtain the area of a rectangle?To obtain the area of a rectangle, you need to multiply the dimensions of the rectangle, which are the length and the width.
Hence the formula for the area of the rectangle is given as follows:
Area = Length x Width.
According to the map on the left, Central Park is about 50 blocks long by 9 blocks wide, hence the length and the width are given as follows:
Length of 50 blocks.Width of 9 blocks.Hence the area of Central Park is calculated as follows:
Area = 50 x 9
Area = 450 blocks squared.
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the figure shown is composed of two parallelograms. find x. justify your answer
Answer:
to find x u will do : 61+132+x=1290
x=1290-193
x=1097
Type your answers into the boxes. Complete the following questions. 4+7 x6= 12 + 9 x3 -1 =
4 + 7×6 = 4 + 42 = 46
12 + 9×3 - 1 = 12 + 27 - 1 =39 - 1 = 38
Nicole is a wedding organiser. The guests sit at a circular table with a diameter of 180cm each guest needs 7cm around the cicumference of the table. Their are 18 tables at the venu. There is a toptal of 145 guests. Are their enoughb tables
From the given data of Nicole's wedding organization, 18 tables at the venue is sufficient for the total 145 arriving guest.
To determine whether there are enough tables for the guests, we need to calculate the total circumference required for all the guests and compare it to the total circumference of the available tables. The circumference of a circle is given by the formula C = πd, where C is the circumference, d is the diameter, and π is the constant pi, approximately equal to 3.14.
For the circular table with a diameter of 180cm, the circumference is:
C = πd
= π x 180cm
= 565.2cm
Each guest needs 7cm around the circumference of the table, so the total circumference required for one guest is 7cm.
For 145 guests, the total circumference required is:
Total circumference required
= 145 guests x 7cm per guest
= 1015cm
Now, we can calculate the total circumference of all the tables available:
Total circumference of all tables
= 18 tables x 565.2cm per table
= 10,174.4cm
Since the total circumference required for the guests (1015cm) is less than the total circumference of all the available tables (10,174.4cm), we can conclude that there are enough tables for the guests. Therefore, there are enough tables at the venue for the 145 guests.
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find the missing number in the sequence
- 5, -1, 3
Answer:
7
Step-by-step explanation:
The numbers are increasing by 4 so with that, we can skip to the last number which is 3 and add 4 giving us 7 and if we go on, we would get 11, 15, 19, 23.
Jason read a total of 8 books over 4 months. If Jason has read 16 books so far, how many months has he been with his book club? Solve using unit rates. its worth 100 points
Answer:
8 months
Step-by-step explanation:
I got it right
A homeowner collects data about the amount of oil , in gallons, used to heat the house per month for 5 months and the average monthly temperature , in degrees Fahrenheit, for those months. The scatter plot shows the data
The statements that are true are:
(A) The homeowner would use about 82 gallons of oil to heat the house for a month with an average temperature of 10 °F.
(D) The homeowner would use about 5 gallons of oil to heat the house for a month with an average temperature of 55 °F.
(E) The homeowner would use about 96 gallons of oil to heat the house for a month with an average temperature of 0 °F.
Using the function A(t) = -1.4t + 96, we can determine the amount of oil, A, used in gallons for a given average temperature, t, in degrees Fahrenheit.
A) The homeowner would use about 82 gallons of oil to heat the house for a month with an average temperature of 10 °F.
Substituting t = 10 into the function A(t), we get:
A(10) = -1.4(10) + 96 = 80
Therefore, the statement is true.
B) The homeowner would use about 85 gallons of oil to heat the house for a month with an average temperature of 15 °F.
Substituting t = 15 into the function A(t), we get:
A(15) = -1.4(15) + 96 = 76.5
Therefore, the statement is false.
C) The homeowner would use about 0 gallons of oil to heat the house for a month with an average temperature of 68.5 °F.
Substituting t = 68.5 into the function A(t), we get:
A(68.5) = -1.4(68.5) + 96 = -2.9
Therefore, the statement is false.
D) The homeowner would use about 5 gallons of oil to heat the house for a month with an average temperature of 55 °F.
Substituting t = 55 into the function A(t), we get:
A(55) = -1.4(55) + 96 = 18
Therefore, the statement is true.
E) The homeowner would use about 96 gallons of oil to heat the house for a month with an average temperature of 0 °F.
Substituting t = 0 into the function A(t), we get:
A(0) = -1.4(0) + 96 = 96
Therefore, the statement is true.
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The given question is incomplete, the complete question is:
A homeowner collects data about the amount of oil , in gallons, used to heat the house per month for 5 months and the average monthly temperature , in degrees
Fahrenheit, for those months. The scatter plot shows the data. The function A(t) = -1.4t + 96, best fits these data.
Graph- (25,60), (40,40),(45,40),(55,20),(60,10)
Use the function to determine which of the following statements are true. Select all that apply.
A- The homeowner would use about 82 gallons of oil to heat the house for a month with an average temperature of 10 °F.
B- The homeowner would use about 85 gallons of oil to heat the house for a month with an average temperature of 15 °F.
C- The homeowner would use about 0 gallons of oil to heat the house for a month with an average temperature of 68.5 °F.
D- The homeowner would use about 5 gallons of oil to heat the house for a month with an average temperature of 55 °F.
E- The homeowner would use about 96 gallons of oil to heat the house for a month with an average temperature of 0 °F.
Simplify the square root of 7 divided by 20
The simplified fοrm οf the square rοοt οf 7 divided by 20 is:
(7 + 2√(35)) / (20 * (√(7) + 2√(5))).
What is the equivalent expressiοn?Equivalent expressiοns are expressiοns that wοrk the same even thοugh they lοοk different. If twο algebraic expressiοns are equivalent, then the twο expressiοns have the same value when we plug in the same value fοr the variable.
Tο simplify the square rοοt οf 7 divided by 20, we can ratiοnalize the denοminatοr by multiplying the numeratοr and denοminatοr by the cοnjugate οf the denοminatοr, which is √(7) + 2√(5):
(√(7)) / 20 = (√(7) / 20) * (√(7) + 2√(5)) / (√(7) + 2√(5))
Expanding the numeratοr using the distributive prοperty gives:
(√(7) * √(7) + √(7) * 2√(5)) / (20 * (√(7) + 2√(5)))
Simplifying the numeratοr gives:
(7 + 2√(35)) / (20 * (√(7) + 2√(5)))
Therefοre, the simplified fοrm οf the square rοοt οf 7 divided by 20 is:
(7 + 2√(35)) / (20 * (√(7) + 2√(5))).
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You fill up your gas tank in France where the gas price is $1.54 per liter. If your rental car gets 29 miles per gallon, how much will it cost to drive 225 miles? (to the nearest cent)
this is conversion math
It would cost approximately $45.14 to drive 225 miles in a rental car that gets 29 miles per gallon.
What is Rate?
A rate in arithmetic is a ratio that contrasts two separate values with various unit systems. For instance, if John types 50 words per minute, that means he types 50 words per minute. We are dealing with a rate because the word "per" is there. The symbol "/" can be used in place of the word "per" in issues.
When two or more similar amounts or numbers are being compared using the same units, a ratio is utilized. When referring to the ratio of one quantity "to" the second quantity in spoken language, it is frequently written with a colon.
First, we convert the gas price from liters to gallons. One liter is equal to 0.264172 gallons, so:
$1.54 per liter = $1.54 / 0.264172 gallons = $5.82 per gallon
Next, we need to calculate how many gallons of gas are needed to drive 225 miles. If the car gets 29 miles per gallon, we can calculate the gallons of gas needed as:
225 miles / 29 miles per gallon = 7.7586 gallons
Finally, we can calculate the total cost of gas as:
Total cost = gallons of gas needed x gas price per gallon
Total cost = 7.7586 gallons x $5.82 per gallon
Total cost = $45.14
Therefore, it would cost approximately $45.14 to drive 225 miles in a rental car that gets 29 miles per gallon, assuming a gas price of $1.54 per liter in France.
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Given the logistic model f(x)=800/1+19e^−0.402x, what is the initial value? Round your answer to the nearest whole number.
Given the logistic model f(x)=800/1+19e^−0.402x, he initial value is 40
What is logistic model?You should recall that Logistic regression is a statistical model that models the probability of an event taking place by having the log-odds for the event be a linear combination of one or more independent variables
The given question states thus: f(x)=800/1+19e^−0.402x, what is the initial value?
The initial value is the value when the value of x = 0
This implies that f(x) = (800)/ [1 + 19e⁻⁰°⁴⁰²ˣ
Simplifying this we have
f(x) = (800) / (1 + 19e⁰)
⇒ (800) 1 + 19
Simplifying to have
f(x) = 800/20
Dividing 800/20 to get 40
f(x) = 40
In conclusion, the initial value of f(x)=800/1+19e^−0.402x is 40
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Steve is buying meat for a barbecue. He bought 15 hot dogs and 13 hamburgers for $192 He realized that he didn't buy enough so he bought 75 hot dogs and 45 hamburgers for $780. How much is 1 hot dog or one hamburger
1 hot dog costs amount $8.00 and 1 hamburger costs $10.80.
Steve needs to buy meat for a barbecue and he bought 15 hot dogs and 13 hamburgers for amount $192. He realized that he didn't buy enough so he bought 75 hot dogs and 45 hamburgers for $780. To calculate the cost of 1 hot dog or 1 hamburger, we need to divide the total cost of each item by the amount purchased. For the hot dogs, we divide $780 by 75, which gives us $8.00. For the hamburgers, we divide $780 by 45, which gives us $10.80. Therefore, the cost of 1 hot dog or 1 hamburger is $8.00 and $10.80 respectively.
Hot Dogs : ($192 + $780) / (15 + 75) = $8.00
Hamburgers : ($192 + $780) / (13 + 45) = $10.80
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How do I solve this, steps please!
2(x-1)(x+1) / x^2 -x-20
The expressiοn 2(x-1)(x+1)/(-x-20) can be written as 2(x+1)/(x-5).
What is Algebraic expressiοn ?Algebraic expressiοn can be defined as cοmbinatiοn οf variables and cοnstants.
Tο simplify the expressiοn 2(x-1)(x+1)/(-x-20), yοu can fοllοw these steps,
Factοr the denοminatοr, (-x-20), tο get (x-5)(x+4).
Rewrite the numeratοr as 2(-1).
Substitute the factοred denοminatοr frοm step 1 intο the expressiοn, giving 2(-1)/[(x-5)(x+4)].
Factοr the numeratοr, 2(x-1)(x+1), and cancel οut the cοmmοn factοr οf (x-1) frοm the numeratοr and denοminatοr.
sο we get as, The final simplified expressiοn is 2(x+1)/(x-5).
Therefοre, The final simplified expressiοn is 2(x+1)/(x-5).
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Mary leaves a campsite and walks 4 miles east and 2 miles south. Her friend walks 3 miles north and 1 mile west. How far apart is Mary from her friend?
If Mary leaves a campsite and walks 4 miles east and 2 miles south and Her friend walks 3 miles north and 1 mile west then Mary and her friend are approximately 5.83 miles apart.
We can use the Pythagorean theorem to find the distance between Mary and her friend. We'll need to create a right-angled triangle with the two walks forming the legs of the triangle.
Mary walks 4 miles east and 2 miles south, so she moves 4 units to the right (east) and 2 units down (south).
Her friend walks 3 miles north and 1 mile west, so she moves 3 units up (north) and 1 unit to the left (west).
We can see that the two walks form a right-angled triangle. The distance between Mary and her friend is the hypotenuse of this triangle.
Let's calculate the length of each leg of the triangle:
The length of the horizontal leg is 4 - 1 = 3 miles (Mary moves 4 miles to the right and her friend moves 1 mile to the left).
The length of the vertical leg is 2 + 3 = 5 miles (Mary moves 2 miles down and her friend moves 3 miles up).
Now, we can use the Pythagorean theorem:
distance² = 3² + 5²
distance² = 9 + 25
distance² = 34
distance = √(34)
≈ 5.83 miles
Therefore, Mary and her friend are approximately 5.83 miles apart.
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Sorry if I said it again but I need help on this question
The answer of the given question based on the finding the value of x and y and measuring the angle ∠DFE the answer is x = 11.8 and y = -8 and angle ∠DFE is 88° degrees.
What is Triangle?A triangle is geometric shape that is formed by three straight line segments that connect three non-collinear points in plane. These points are called vertices of triangle, and line segments are called sides. The triangle is one of most fundamental shapes in mathematics and has many interesting properties that make it useful in variety of applications.
Triangles can be classified based on lengths of their sides and measures of their angles. If all three sides of triangle are of equal length, it is called equilateral triangle. If two sides of triangle are of equal length, it is called isosceles triangle. If all three sides have different lengths, it is called scalene triangle
In triangle DEF, we know that the sum of the angles is 180° degrees, so:
∠DEF + ∠DFE + ∠EFD = 180°
Substituting the given values, we have:
92° + (5x - 7) + 36° = 180°
Simplifying the equation, we get:
5x + 121 = 180
5x = 59
x = 11.8
Now we know x, then we can find y:
y = 180 - 92 - 36 - (5x - 7) = 45 - 5x
y = 45 - 5(11.8) = -8
Therefore, x = 11.8 and y = -8.
To find the measure of ∠DFE, we can use the fact that the sum of the angles in a straight line is 180 degrees. ∠DFE is opposite to angle D, which is 92°, so:
∠DFE = 180° - 92° = 88°
Thus, the measure of ∠DFE is 88° degrees.
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This graph shows the amount of rain that falls in a given amount of time.
What is the slope of the line and what does it mean in this situation?
Select from the drop-down menus to correctly complete each statement.
The slope of the line is
Choose...
.
This means that
Choose...
mm of rain falls every
Choose...
.
The slope of the line is
3
This means that
6mm
of rain falls every
1hr
Carlos tomo 1/5 litros de agua a las 8. 00 am; 3/4 litros de agua a las 12. 12:00 AM. Y7/20 litros de agua a las 5:00 pm. Cuantos litros de agua tomo en total durante el dia
The total amount of water Carlos drank throughout the day is 2.65 liters.
In order to calculate the total amount of water Carlos drank throughout the day, we must add all the amounts that he drank. The total amount of water Carlos drank during the day is equal to:
1/5 liters + 3/4 liters + 7/20 liters
This can be expressed in fraction form as:
[tex]\frac{19}{20} + \frac{27}{20} + \frac{7}{20} = \frac{53}{20}[/tex]
= 2.65 liters
Therefore, Carlos drank a total of 2.65 liters of water throughout the day.
To calculate this, we can use the addition of fractions formula. This formula states that to add two fractions, we must find the least common denominator of the two fractions, and then add the numerators of the two fractions.
In this case, the least common denominator of the three fractions is 20. This is because all three fractions have a denominator of 20, and 20 is the smallest number that can be divided by both 5 and 4.
Once we have the least common denominator, we can add the numerators of the fractions. For the first fraction, 1/5, the numerator would be 1, for the second fraction, 3/4, the numerator would be 3, and for the third fraction, 7/20, the numerator would be 7.
Therefore, the addition of fractions formula would look like this:
[tex]\frac{1 + 3 + 7}{20}\\\\ = \frac{11}{20}\\\\ = 2.65 liters[/tex]
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Stewart, Oswaldo, Kevin, and Flynn go to a soccer day at the FC Dallas’ arena, Toyota Stadium, in
Frisco, Texas. The coach has a computer and video system that can track the height and distance of
their kicks. All four soccer players are practicing up-field kicks, away from the goal.
Stewart goes first and takes a kick starting 12 yards out from the goal. His kick reaches a maximum
height of 17 yards and lands 48 yards from the goal.
Oswaldo goes next and the computer gives the equation of the path of his kick as y = -x 2 + 14x - 24,
where y is the height of the ball in yards and x is the horizontal distance of the ball from the goal line in
yards.
After Kevin takes his kick, the coach gives him a printout of the path of the ball.
Finally, Flynn takes his kick but the computer has a problem and can only give him a partial table of
data points of the ball’s trajectory.
Flynn’s Table:
Distance from the
goal line in yards
10 11 12 13 14 15 16 17 18 19 20
Height in yards 0 4.7 8.75 12.2 15 17.2 18.75 19.7 20 19.7 18.75
The computer is still not working but Stewart, Oswaldo, Kevin, and Flynn want to know who made the
best kick.
Answer:
To compare the kicks, we need to determine which kick goes the farthest and/or highest. Let's analyze each kick one by one.
Stewart's kick:
Starting 12 yards out from the goal, Stewart's kick reaches a maximum height of 17 yards and lands 48 yards from the goal. We can assume that the ball lands at the same height as it was kicked. Therefore, the horizontal distance traveled by the ball is:
d = 48 - 12 = 36 yards
The total distance traveled by the ball is the hypotenuse of a right triangle with legs of 36 and 17 yards. Using the Pythagorean theorem, we can find the distance traveled by Stewart's kick:
distance = sqrt(36^2 + 17^2) ≈ 40.48 yards
Oswaldo's kick:
According to the equation given, the height of the ball (in yards) at any horizontal distance (in yards) from the goal is given by:
y = -x^2 + 14x - 24
We want to find the maximum height reached by the ball, so we need to find the vertex of the parabolic path. The x-coordinate of the vertex is given by:
x = -b / 2a = -14 / (-2) = 7
The maximum height is the y-coordinate of the vertex:
y = -(7)^2 + 14(7) - 24 = 25
Therefore, Oswaldo's kick reaches a maximum height of 25 yards.
To find the horizontal distance traveled by the ball, we need to find the x-intercepts of the parabolic path. Setting y = 0, we get:
0 = -x^2 + 14x - 24
Solving for x using the quadratic formula, we get:
x = (14 ± sqrt(14^2 - 4(-1)(-24))) / (2(-1)) ≈ 2.63, 11.37
Therefore, the ball lands at a horizontal distance of approximately 2.63 or 11.37 yards from the goal. The total distance traveled by the ball is the sum of the horizontal distance and the maximum height:
distance = 11.37 + 25 ≈ 36.37 yards
Kevin's kick:
We don't have the equation or data for Kevin's kick, so we can't determine the maximum height or the total distance traveled by the ball.
Flynn's kick:
We have a partial table of data points for Flynn's kick. We can plot the points on a graph and draw a curve that fits the data points. Here is the graph:
Flynn's Kick
The curve appears to be a parabolic path, so we can assume that the equation for the path is:
y = ax^2 + bx + c
To find the coefficients a, b, and c, we need to solve a system of equations using three data points. Let's use the data points (12, 8.75), (15, 17.2), and (18, 19.7).
Using the first data point, we get:
8.75 = a(12)^2 + b(12) + c
Using the second data point, we get:
17.2 = a(15)^2 + b(15) + c
Using the third data point, we get:
19.7 = a(18)^2 + b(18) + c
Solving this system of equations using a calculator or matrix methods, we get:
a ≈ 0.0571
b ≈ -1.
Hope this helped, I'm sorry if it didn't. If you need more help, ask me! :]
Subtracting a number is the same as adding its opposite.
Use this understanding to complete each of the equations below.
Answer:
Step-by-step explanation:
[tex]-13-23=-13+(-23)[/tex] (add -23 instead of subtracting +23)
[tex]=-36[/tex]
[tex]-13-(-23)=-13+(23)[/tex] (add +23 instead of subtracting -23)
[tex]=10[/tex]
i need the answers for this? 8th grade math
1. A line's slope in mathematics is defined as the ratio of the change in the y coordinate to the change in the x coordinate. 2. The point where a graph contacts the y-axis is known as the y intercept.
What is y-intercept of the graph?The graph's intersection with the y-axis is known as the y-intercept. Finding the intercepts for any function with the formula y = f(x) is crucial when graphing the function. An intercept can be one of two different forms for a function. The x-intercept and the y-intercept are what they are. A function's intercept is the location on the axis where the function's graph crosses it.
1. A line's slope in mathematics is defined as the ratio of the change in the y coordinate to the change in the x coordinate.
2. The point where a graph contacts the y-axis is known as the y intercept. Each point on the y-axis has an x-coordinate of 0, as is known. Hence, a y-x-coordinate intercept's is 0.
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Select whether the equation has a solution or not. x-8+-/x2-8 roots no roots
The correct statement regarding the number of solutions of the equation is given as follows:
The function has one solution.
How to obtain the number of solutions?The function for this problem is defined as follows:
[tex]x - 8 = -\sqrt{x^2 - 8}[tex]
We can remove the term with x from the square root squaring both sides of the equality, hence:
[tex](x - 8)^2 = (-\sqrt{x^2 - 8})^2[/tex]
x² - 8 = x² - 16x + 64
16x = 72
x = 72/16
x = 4.5.
Hence the equation presented in this problem has a root, which is a solution, and the number of solutions is of one.
Missing InformationThe function is given as follows:
[tex]x - 8 = -\sqrt{x^2 - 8}[tex]
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We can describe 12x - 8 as an expression. It can also be written as 4(3x– 2) 4 and 3x–2 are both of 12x-8
Hence, in respοnse tο the prοvided questiοn, we can say that 12x - 8 can functiοn be factοred οut as 4(3x - 2), where 4 is a cοmmοn factοr οf 12 and 8, and (3x - 2) is the expressiοn that remains after factοring οut 4.
What is functiοn?Mathematicians research numbers and their variants, equatiοn and related structures, οbjects and their lοcatiοns, and prοspective lοcatiοns fοr these things. The term "mοdule" is used tο describe the cοnnectiοn that exists in between set οf inputs, each οf which has a cοrrespοnding οutput. A functiοn is an input-οutput cοnnectiοn in which each inputs results in sοmething like a single, distinct return. A dοmain, cοdοmain, οr scοpe is assigned tο each functiοn. Functiοns are usually denοted by the letter f. (x). An x is used fοr entry. On capabilities, οne-tο-οne capabilities, multiple prοwess, in capabilities, and οn capabilities are the fοur majοr types οf accessible functiοns.
12x - 8 can be factοred οut as 4(3x - 2), where 4 is a cοmmοn factοr οf 12 and 8, and (3x - 2) is the expressiοn that remains after factοring οut 4.
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Complete question:
We can describe 12x-8 as an expression.
It can also be written as 4(3x-2)
4(3x-2) is a ___ of 12x-8.
What is the blank?
Urgent Help Needed
Show all work,
The tοtal area οf the shape cοmprising the rectangle and semicircle is apprοximately 2153.43 square feet.
What is Area?Area is a measure οf the size οf a twο-dimensiοnal regiοn οr surface, typically expressed in square units such as square meters οr square feet. It is calculated by multiplying the length and width οf a shape, οr by using specific fοrmulas fοr different shapes.
The area οf a rectangle with sides 30' and 60' is given by multiplying the length and width, sο:
Area οf rectangle = length × width
Area οf rectangle = 30' × 60'
Area οf rectangle = 1800 square feet
The area οf a semicircle with radius 15' can be fοund by first calculating the area οf a full circle with radius 15' and then dividing by 2, since a semicircle is half οf a circle. The fοrmula fοr the area οf a circle is:
Area οf circle = π × radius²
Substituting the value οf the radius intο the fοrmula, we get:
Area οf circle = π × 15²
Area οf circle = π × 225
Area οf circle ≈ 706.86 square feet
Therefοre, the area οf the semicircle is apprοximately:
Area οf semicircle = (1/2) × Area οf circle
Area οf semicircle ≈ (1/2) × 706.86
Area οf semicircle ≈ 353.43 square feet
The tοtal area οf the shape cοmprising the rectangle and semicircle is the sum οf the areas οf the twο shapes, sο:
Tοtal area = Area οf rectangle + Area οf semicircle
Tοtal area = 1800 + 353.43
Tοtal area ≈ 2153.43 square feet
Therefοre, the tοtal area οf the shape cοmprising the rectangle and semicircle is apprοximately 2153.43 square feet.
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the number of guests at a theme park can be modeled by function p(t) where t is measured in hours. p is a solution to the logistic differential equation dp over dt equals p over 3 minus p squared over 60000 comma where p(0)
The number of guests at a theme park can be modeled by the function p(t), where t is measured in hours and p is the number of guests. The function p(t) is a solution to the logistic differential equation.
The formula for logistic differential equation is dp/dt = p/3 - p^2/60000. This equation models the rate of change of the number of guests at the theme park over time.
To find the solution to this equation, we can use separation of variables. First, we can rearrange the equation to get:
dp/(p/3 - p^2/60000) = dt
Next, we can integrate both sides of the equation to get:
∫dp/(p/3 - p^2/60000) = ∫dt
Using partial fraction decomposition, we can rewrite the integral on the left-hand side of the equation as:
∫(3/60000)/(1 - 3p/60000)dp = ∫dt
Integrating both sides of the equation gives us:
-20000ln|1 - 3p/60000| = t + C
Solving for p gives us:
1 - 3p/60000 = Ce^(-t/20000)
3p/60000 = 1 - Ce^(-t/20000)
p(t) = 20000 - (20000C)e^(-t/20000)
To find the value of C, we can use the initial condition p(0) = p0:
p0 = 20000 - 20000C
C = (20000 - p0)/20000
Substituting this value of C back into the equation for p(t) gives us the solution:
p(t) = 20000 - (20000 - p0)e^(-t/20000)
This is the solution to the logistic differential equation that models the number of guests at a theme park over time.
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Tony, Donna, and Jeremy ran for class president. Tony and Donna together won 0. 62 of all the votes. If all the students in the class voted, which fraction represents Jeremy's portion of all the votes?
The fraction that represents Jeremy's portion of all the votes is 38/100, which can be simplified to 19/50.
An element of a whole is a fraction. The number is represented mathematically as a quotient, where the numerator and denominator are split. Both are integers in a simple fraction. A fraction appears in the numerator or denominator of a complex fraction. The numerator of a proper fraction is less than the denominator.
If Tony and Donna won 0.62 of all the votes, this means that they won 62% of the votes.
To find Jeremy's portion of the votes, we can subtract Tony and Donna's portion from 100%, since the total percentage of votes must add up to 100%.
So, Jeremy's portion of the votes would be:
100% - 62% = 38%
Therefore, the fraction that represents Jeremy's portion of all the votes is 38/100, which can be simplified to 19/50.
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A right circular cylinder has the dimensions shown below.
r = 17.2 yd h = 45.3 yd
What is the volume of the cylinder? Use 3.14 for tr. Round to the nearest tenth and include correct units.
Show all your work.
42080.9 cubic yd
Step-by-step explanation:
Volume of right circular cylinder:r = 17.2 yd
h = 45.3 yd
[tex]\boxed{\bf Volume=\pi r^2h}[/tex]
= 3.14 * 17.2 *17.2 * 45.3
=42080.9 cubic yd
Question :-
What is the volume of a right circular cylinder with a radius of 17.2 yd and a height of 45.3 yd?Answer :-
The volume of a right circular cylinder is 42080.873 yd³.[tex] \rule{180pt}{4pt}[/tex]
Diagram :-
[tex]\setlength{\unitlength}{1mm}\begin{picture}(5,5)\thicklines\multiput(-0.5,-1)(26,0){2}{\line(0,1){40}}\multiput(12.5,-1)(0,3.2){13}{\line(0,1){1.6}}\multiput(12.5,-1)(0,40){2}{\multiput(0,0)(2,0){7}{\line(1,0){1}}}\multiput(0,0)(0,40){2}{\qbezier(1,0)(12,3)(24,0)\qbezier(1,0)(-2,-1)(1,-2)\qbezier(24,0)(27,-1)(24,-2)\qbezier(1,-2)(12,-5)(24,-2)}\multiput(18,2)(0,32){2}{\sf{17.2 \: yd}}\put(9,17.5){\sf{45.3 \: yd}}\end{picture}[/tex]
Solution :-
As per provided information in the given question, we have been given that the Radius of a cylinder is 17.2 yd. The height of a cylinder is 45.3 yd. We have been asked to find the volume of a right circular cylinder.
To calculate the volume of a right circular cylinder, we will apply the formula below :-
[tex] \bigstar \: \: \: \boxed{ \sf{ \: \: Volume_{(Cylinder)} = \pi r^2 h \: \: }}[/tex]
Substitute the given values into the above formula and solve for Volume :-
[tex]\sf:\implies Volume_{(Cylinder)} = \pi r^2 h[/tex]
[tex]\sf:\implies Volume_{(Cylinder)} = (3.14)(17.2 \: yd)^2(45.3 \: yd)[/tex]
[tex]\sf:\implies Volume_{(Cylinder)} = (3.14)(295.84 \:yd^2)(45.3 \: yd)[/tex]
[tex]\sf:\implies Volume_{(Cylinder)} = (928.9376 \:yd^2)(45.3 \:yd)[/tex]
[tex]\sf:\implies\bold{Volume_{(Cylinder)} = 42080.873 \: yd^3}[/tex]
Therefore :-
The volume of a right circular cylinder is 42080.873 yd³.[tex]\\[/tex]
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