Answer:
11+x
Step-by-step explanation:
6 + (5 + x)
because you have a + between 6 and the parentheses then you can just add everything up without warring about them. so:
6+5+x which equals to 11+x
independent random samples are selected from two populations. the summary statistics are given below. assume unequal variances for the following questions. test if the mean of the first population is larger than that of the second population. what is the p-value (round off to second decimal place)?
The mean of the first population is not significantly larger than that of the second population. The p-value is 0.093.
Population 1: N = 35,X = 5.3, S = 2.8
Population 2: N = 21, X = 4.9, S = 3.2
We can use the t-test to test if the mean of the first population is larger than that of the second population. The formula for this is:
t = (x1 - x2) / (S√((1/N1) + (1/N2)))
Where x1 is the mean of population 1, x2 is the mean of population 2, S is the pooled standard deviation, and N1 and N2 are the sample sizes of the two populations.
Plugging in our values, we get:
t = (5.3 - 4.9) / (3.2√((1/35) + (1/21))) = 1.68
Using an online calculator, we find that the corresponding p-value is 0.093. Therefore, we fail to reject the null hypothesis that the two populations have the same mean and conclude that the mean of the first population is not significantly larger than that of the second population. The p-value is 0.093.
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malik depoit 1,050 in a aving account and it earned 241.50 in imple interet after four year find the intreret rate on malik avinga account
The interest rate on Malik's saving account is 4.62%. This was calculated by finding the total amount after 4 years, subtracting the original deposit, and then dividing the interest earned by the original deposit and multiplying by 100.
1. Calculate the total amount in the account after 4 years: 1050 + 241.50 = 1291.50
2. Calculate the interest earned: 1291.50 - 1050 = 241.50
3. Calculate the interest rate: 241.50 / 1050 x 100 = 4.62%
The interest rate on Malik's saving account is 4.62%. This was calculated by finding the total amount after 4 years, subtracting the original deposit, and then dividing the interest earned by the original deposit and multiplying by 100.
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(2, -3) is a solution of the equation 3x - y = 3.
What is in mathematics 24divided4x2-2=
Answer:
10
Step-by-step explanation:
PEMDAS
Will the following side lengths form a right triangle?
12 ft, 16 ft, 20 ft
Answer:
The three side lengths given, 12 ft, 16 ft, and 20 ft can form a right triangle. This is because the Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides. In this case, 20^2 = 12^2 + 16^2, so the sides 12 ft, 16 ft and 20 ft can form a right triangle.
Write an expression that is equivalent to
5(3r-8). State the property that justifies
your answer.
Answer:
15r-40
Step-by-step explanation:
By the Distributive Property, [tex]5(3r-8)=5(3r)+5(-8)=15r-40[/tex]
3. According to one of Marvel's teachers, a typical learning-disabled student
a. is poor at sports.
b. has few talents.
c. has an IQ of normal or above.
d. has an IQ of normal or below.
According to one of Marvel's teachers, a typical learning-disabled student has an IQ of normal or above. Learning disabilities are not related to IQ, so a learning-disabled student could have an IQ of normal or above.
What is probability and its types? Probability is the measure of the likelihood that an event or a set of events will occur. It is a mathematical concept used to quantify the chance of a certain outcome. It is usually expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.There are two types of probability: classical probability and empirical probability. Classical probability uses a series of assumptions to calculate the probability of an event. It is based on the assumption that all outcomes are equally likely. Empirical probability is based on observed data and is used when the data is too complex to calculate using classical probability.Probability can be used to make predictions and decisions. For example, if a person is deciding whether or not to purchase a lottery ticket, they can use probability to calculate the chances of winning. Probability is also used in data analysis and forecasting to help make better decisions.Probability is an important concept in statistics and is used in a variety of fields including medicine, engineering, economics, and finance. It is an essential tool for understanding the world around us and making informed decisions.To learn more about probability refer to:
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Oscar feels that in order to get a decent amount of honey there should be at least 15000 bees in the colony estimate how many months it will take oscar until he has 15000 bees
a. The function of the bee population is: [tex]f(x) = 5000 * (1.12)^x[/tex]
b. To graph the function, f(x), you can use a graphing calculator or software such as Excel or a Python library like Matplotlib.
c. It will take approximately 7.9 months for Oscar to have 15,000 bees in the colony.
The problem states that Oscar wants to own a bee colony and extract honey from the hive. He starts with a colony of 5,000 bees and the number of bees grows exponentially with a growth factor of 12% each month. To solve this problem, we can use the exponential growth formula to determine the number of bees in the colony based on the month.
The exponential growth formula is [tex]P(t) = P_0 * (1 + r)^t[/tex] where
P(t) is the population at time t[tex]P_0[/tex] is the initial populationr is the growth ratet is the number of time periods.In this case, [tex]P_0[/tex] = 5000, r = 0.12, and t = x (the number of months). So, the function of the bee population is: [tex]f(x) = 5000 * (1.12)^x[/tex]
In order to get a decent amount of honey, Oscar feels that there should be at least 15,000 bees in the colony. To estimate how many months it will take Oscar until he has 15,000 bees, we can set f(x) = 15,000 and solve for x.
By doing this, we get x = log(15000/5000) / log(1.12) ≈ 7.9 months. This means it will take approximately 7.9 months for Oscar to have 15,000 bees in the colony.
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The complete question is:
Oscar wants to own a bee colony so that he can extract honey from the hive. He starts a colony with 5,000 bees. The number of bees grows exponentially with a growth factor of 12% each month.
a. Write a function, f(x), for the bee population that can be used to determine the number of bees in the colony, based on the month, x.
b. Use technology to graph the function, f(x).
c. Oscar feels that in order to get a decent amount of honey, there should be at least 15,000 bees in the colony. Estimate how many months it will take Oscar until he has 15,000 bees.
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HELP ME ASAPPPPP please make it right because i’m in so much trouble rn.
Fill in the table using this function rule:
Y=-5x+3
X Y
-1 ?
0 ?
1 ?
2 ?
Answer:
X Y
-1 8
0 3
1 -2
2 -7
Step-by-step explanation:
Using the x values of the table, simply plug in those x values, replacing the x in the equation. For example:
y = -5x + 3
y = -5 * 2 + 3
y = -10 + 3
y = -7
five quare cake of ide 30cm i arranged to from a rectangle, Find the perimeter of the cake
The perimeter of five square and perimeter of rectangular cake is equal,
So, the perimeter of cakes is 600 cm.
The perimeter of a two-dimensional figure is the distance covered around it. It defines the length of shape, whether it is a triangle, square, rectangle or a circle. Area and perimeter are the two major properties of a 2D shape, which describes them.
We have five square cakes of side 30cm.
the perimeter of one cake is =4a
=4×30
=120 cm
So, the perimeter of five cake = 5(120)
=600 cm
The perimeter of five square and perimeter of rectangular cake is equal,
So, the perimeter of cakes is 600 cm.
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I just need to know the value of s
Answer:
S = 25
Step-by-step explanation:
Since it's stated as a square, that means all sides equal each other
In other words;
s+50 = 3s
To get S alone, we will first subtract 50 on both sides
s = 3s-50
Let's now subtract 3s from both sides
s-3s = -50, aka -2s = -50
Changing those to positive, 2s = 50
Last step is to divide both sides by 2
s = 25
Find the area of a circle with diameter, d = 5.8m. Give your answer rounded to 1 DP.
The area of the circle is 26.4 square meters
How to determine the area of the circleFrom the question, we have the following parameters that can be used in our computation:
Diameter, d = 5.8 meters
Start by calculating the radius of the circle
r = 5.8/2
Evaluate
r = 2.9
The area of the circle is then calculated as
A = πr²
Where
r = radius
substitute the known values in the above equation, so, we have the following representation
A = 3.14 * 2.9²
Evaluate
A = 26.4
Hence, the area is 26.4 square meters
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What operation does the expression x + 5 involve?
Answer:
addition
Step-by-step explanation:
there's only one sign + so it means addition
Answer: addition
Step-by-step explanation:
Ski lift cables are strung to the top of a 1200 foot mountain. The angle of elevation of the cables is 30 degrees. How long are the cables?
The cable is 805.4 ft long.
Draw a triangle to represent the situation.
Label the sides of the triangle.
Let x = length of cable
Let 1200 = height of mountain
Let 30 = angle of elevation
Use the Law of Cosines to solve for x.
x² = (1200)² + (1200)² - (2)(1200)(1200)cos(30)
x² = 288000 + 288000 - 1,728,000cos(30)
x² = 576000 - 1,728,000cos(30)
x = √576000 - 1,728,000cos(30)
x = √576000 - 1728000(0.866)
x = √576000 - 1511360
x = √646340
x = 805.4 ft
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gradient of 1 and passing through (0,4)
The equation of line with a gradient of 1 which runs through the point (0,4) is y = x + 4.
What is the equation of line with a slope of 1 and passing through (0,4)?The slope-intercept form is expresses as;
y = mx + b
Where m is slope and b is y-intercept.
The point-slope form is expressed as;
y - y₁ = m( x - x₁ )
Given that, the slope of the line m = 1 and it passes through (0,4)
Plug the slope m = 1 and point ( 0,4 ) into the point-slope form above and simplify.
y - y₁ = m( x - x₁ )
y - 4 = 1( x - 0 )
y - 4 = x - 0
y - 4 = x
Add 4 to both sides
y = x + 4
Therefore, the equation of the line is y = x + 4.
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*
The equation p(n) = 12/5n²-17 represents the overall profit
from production for a company where p is the total profit
in dollars and n is the number of hours per day that
the production line operates. Determine the profit when
n = 101/2 hours.
The profit when n = 101/2 hours is $1,842.50.
Determine the profit when n = 101/2 hours.When the production line operates for 101/2 hours, the total profit can be determined using the equation p(n) = 12/5n²-17.When n = 101/2, the equation becomes p(101/2) = 12/5(101/2)²-17.By simplifying this equation, we can find that the total profit for 101/2 hours of production time is p(101/2) = $723.Therefore, when the production line operates for 101/2 hours, the total profit for the company will be $723.The equation p(101/2) = 12/5(101/2)^2 - 17 can be used to determine the total profit when the production line operates for 101/2 hours. To solve this equation, the expression 12/5(101/2)^2 can be simplified to 12(101)^2/25 which evaluates to 12,405. Subtracting 17 from this result yields a total profit of 12,388 dollars when the production line operates for 101/2 hours. The profit when n = 101/2 hours can be calculated by substituting the value of n into the equation p(n) = 12/5n²-17. This yields a total profit of $323.36 when the production line operates for 101/2 hours.To learn more about the overall profit from production refer to:
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A number m is multiplied by 4/7 is greater than 12/5 write this sentence as an inequality
Answer: m * 4/7 > 12/5
a car is traveling at a constant speed of 65 miles per hour. how many feet does it travel in 5 seconds?
Answer: 476.7 feet
Step-by-step explanation:
65 miles = 343200 feet
1 hour = 3600 seconds
(343200/3600) = 476.7 feet in 5 seconds
I need to find the area. SOMEONE PLS HELP ME
Answer: 31
Step-by-step explanation:
Let's find the trapezoid area first:
(8-2 + 4) 3 / 2
= 10*3/2
= 15
And then the rectangle:
2 * 8
= 16
add the two areas together
15+16 = 31
a spherical balloon is filled with gas at a rate of 4 cm 3 /s . at what rate is the radius r changing with with respect to time when the volume v
The Radius r changing with respect to time when volume v is [tex]\frac{1}{9 \pi} \mathrm{cm} / \mathrm{s}\end{aligned}[/tex].
The volume here depends on the diameter of the radius of the sphere since if we take the cross-section of the sphere, it is a circle. The surface area of sphere is the area or region of its outer surface. To calculate the sphere volume, whose radius is ‘r’ we have the below formula:
Volume of sphere [tex]=\frac{4}{3} \pi r^{3}[/tex]
If you consider a circle and a sphere, both are round. The difference between the two shapes is that a circle is a two-dimensional shape and a sphere is a three-dimensional shape which is the reason that we can measure the Volume and area of a Sphere.
volume is,
[tex]$$\begin{aligned}& V=\frac{4}{3} \pi r^3 \\& \Rightarrow \frac{d V}{d t}=4 \pi r^2 \frac{d r}{d t}\end{aligned}$$[/tex]
given that,
[tex]\frac{dV}{d t}[/tex][tex]=4 \mathrm{~cm}^3 / \mathrm{s}, V=36 \pi \mathrm{cm}^3 \text {. }$$[/tex]
[tex]$$find $\frac{d r}{d t}$ :$$[/tex]
[tex]\begin{aligned}& V=36 \pi \\& \frac{4}{3} \pi r^3=36 \pi \\& r^3=27 \\& \Rightarrow r=3 .\end{aligned}[/tex]
substitute the above values,
[tex]$$\begin{aligned}& \frac{d V}{d t}=4 \pi r^2 \frac{d r}{d t} \\& 4=4 \pi(3)^2 \frac{d r}{d t} \\& \frac{d r}{d t}=\frac{1}{9 \pi} \mathrm{cm} / \mathrm{s}\end{aligned}$$[/tex]
Therefore, the radius r changing with respect to time when the volume v is [tex]\frac{1}{9\pi } cm/s[/tex].
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at a bicycle manufacturer, it costs $72 to make the first bicycle, $83 to make the second, and $77 to make the third. what is the average cost per bicycle? give your answer to two decimals.
At the bicycle manufacturer, the average cost per bicycle is $77.
To find the average cost per bicycle, we need to find the total cost of making all three bicycles and divide that by the number of bicycles.
The total cost is of the bicycles is given by -
$72 (cost of first bicycle) + $83 (cost of second bicycle) + $77 (cost of third bicycle) = $232
Now to find the average cost per bicycle, we will divide the total cost by the number of bicycles.
Hence, $232 ÷ 3 = $77
Therefore, the average cost per bicycle is $77.
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100 Points + Brainliest. Please take your time and answer correctly.
The y intercept has been moved down, and the g(x) graph is less steep than the f(x) graph.
What is meant by linear parent function?the fundamental duty of a family. Y = x or f(x) = x is the parent function for linear functions. Transformation: Modification of a figure's size or position. Child Function: The parent function is f(x) = x for all linear functions. y = x.
The simplest function in a family of functions that yet preserves the definition (or shape) of the entire family is known as a parent function in mathematics.
When the independent variable (often 'x') varies by a constant amount and the dependent variable (typically expressed by 'y') changes by a constant amount, the function is said to be linear.
Therefore, the correct answer is option C. The graph of g(x) is less steep than the graph of f(x) and the y intercept has been shifted down.
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Harold brought two loaves of raisin bread to share with his friends. If there are 12 people total, including Harold, how much of the bread does each person receive?
A. 0.06
B. The decimal is 0.16 with 6 repeating.
C. 0.25
D. The term states the decimal 0.3 repeating.
On the number line, a slow bug S and a fast bug F are moving in the positive direction from the point 0. The speeds of both bugs are constant. Both leave 0 at the same time, and four seconds later F has reached 12 and S has reached 8. If x is the point reached by F after t seconds, and y is the point reached by S after t seconds, express x and y in terms of t PLEASE HELP I NEEd help
If x is the point reached by F after t seconds, and y is the point reached by S after t seconds, then x = 3t, y = 2t. 30 seconds after leaving point 0, 30 units far apart are F and S. At 100 seconds, F and S will be 100 units apart.
The speed of F reached 12 units in 4 seconds or 3 units per second.
x = 3t
The speed of S reached 8 units in 4 seconds or 2 units per second.
y = 2t
x - y = 3t -2t = t
After 30 seconds, the bugs will be apart by (x -y) = 30 units
x - y = 100 = t
After 100 seconds, The bugs will be 100 units apart.
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Which value is equivalent to the expression 2power of 3 plus 3power of 4
Answer:
The value equivalent to the expression 2^3 + 3^4 is 19
What is the answer to question H?
The y intercept means that gallons of water in the base year is 10.
What is Y intercept?Y intercept is a coordinate of y which is the point where the line touches the Y axis.
The x coordinate corresponding to this point will be zero.
Given is a graph which relates the two variables year and the gallons of bottled water per person.
From the graph, it is clear that y intercept is at 10.
It is in the year 1990, which is the base value that we take.
All the other year values are based on the base value.
y intercept means in this context that in the year 1990, which is the initial year, gallons of water per person is 10.
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Help on #12 please
The diagonals of rhombus PQRS intersect at T
The missing measures by using the rhombus LMNO graphic is, 90° is the measure of LPM,the PMN measurement is 102°, LN is 10 units in length.
Rhombus definition?A rhombus is a unique type of quadrilateral with four sides that is similar to a parallelogram. In a rhombus, the opposing sides are parallel and the opposing angles are equal.
LMNO LON = 102° NP = 5 units for a rhombus.
According to the rhombic characteristics, all of the sides are congruent (equal), hence LM = MN = NO = OL and the opposite angles are also equal, and the opposite sides are parallel.
Therefore, LON = 102° = LMN.
Since adjacent angles add up to 180 degrees.
L + M thus equals 180 degrees.
∠M + ∠N = 180°
∠N + ∠O = 180°
∠O + ∠L = 180°
So, ∠N = 180° - ∠O = 180° - 102° =78°
∠L = 180° - ∠O = 180° - 102° =78°
∠M = 180° - ∠L = 180° - 78° =102°
Alternatively, we can say that each of the two diagonals in a rhombus is the perpendicular bisector of the other. Diagonals bisect each other at an angle of 90°.
Thus, LPM = NP0 = MPN = LPO = 90 degrees.
So, 90° is the measure of LPM.
The PMN measurement is 102°.
LN is 10 units in length.
The completre question is,
Rhombus LMNO has mLON = 102° and NP = 5 units.
The Rhombus L M N O is depicted. Drawn as parallel lines, they connect at point P and extend from point L to point N and from point M to point O, respectively. Congruence exists on every side.
You may locate the missing measures by using the rhombus LMNO graphic.
° is how much LPM is measured.
° is used to measure PMN.
Units are the length of LN
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The equation m = 40g gives the distance in miles, m, that a car can travel using g gallons of gas.
a. If the car has gone 140 miles, how much gas was used? Show your thinking.
b. Write an equation that represents the inverse function: the gallons of gas as a function of distance in miles
The amount of gas used for 140 miles is 3.5 gallons and the inverse equation is g = m/40
How to determine the amount of gas usedFrom the question, we have the following parameters that can be used in our computation:
m = 40g
The number of miles is given as
m = 140
substitute the known values in the above equation, so, we have the following representation
40g = 140
Divide by 40
g = 3.5
Hence, the amount of gas is 3.5 gallons
How to determine the inverse functionRecall that, we have
m = 40g
Divide by 40
g = m/40
Hence, the inverse is g = m/40
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The equation of the line which passes through the point (0,-4) and has a gradient of 0. 5 is
The equation of the line which passes through the point (0,-4) and has a gradient of 0. 5 is (x-8)/2.
A straight line can be represented by the "Point-Slope" form of the line.
In point-slope form, we can deduce an equation of any line on the Cartesian coordinate system with the help of its slope/gradient "m" and a point through which it passes (x1,y1).
the equation of Point Slope form is,
(y-y1)=m(x-x1),
where, x and y are any general point on the line.
in the given question the value of the slope/gradient (m) is given as 0.5
and it passes across the point (0,-4)
so according to the equation of the point-slope form,
the equation of line must be,
(y-(-4))=0.5(x-(0))
= y+4=0.5x
= 2y+8=x
= 2y = x-8
= y = (x-8)/2
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