20. How many four-digit positive integers are divisible by both 12 and 20, but are not

divisible by 16?

(A) 111

(B) 113

(C) 125

(D) 150

(E) 149

Answers

Answer 1

The number of four-digit numbers that are divisible by both 12 and 20 but are not divisible by 16, obtained by finding the least common multiples of 12 and 20 are 150. the correct option is therefore option (D)

(D) 150

What is a least common multiple?

The least common multiple (LCM) of two or more integers is the smallest positive integer that is a multiple of each of the integers.

The numbers 12, and 20 are divisible by 4, therefore, numbers that are divisible by 12 and 20 are also divisible by 4. Therefore, the number of four-digit numbers that are divisible by 4 are found as follows;

The number of 4 digit positive numbers between 1000 to 9999 are 9000 four-digit positive numbers.

The number of multiples of 4 between 1000 and 9999, includes the first number 1004 and the last number 9996

The number of four-digit positive integers that are divisible by 4 therefore is; (9996 - 1004)/4 + 1 = 2250

The least common multiple of 4, 12 and 20 is 60, therefore;

The number of four digit numbers that are divisible by 60 are can be found as follows;

The first number is 1020, the last number is 9960

Therefore, the number of 4 digit numbers that are divisible by 60 are;

(9960 - 1020)/60 + 1 = 150

The number of 4 digit numbers that are divisible by 12 and 20 but is not divisible by 16 is divisible by 4 and 15 that have a least common multiple of 60

The number of four-digit numbers that are divisible by 4 and 15 is also divisible by 60, therefore, the number of 4 digit numbers that are divisible by 4 and 15 are also 150

Therefore, the number of four-digit numbers that are divisible by 12 and 20 but are not divisible by 16 is 150.

The correct option is; (D) 150

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Related Questions

Given the pre-image ABCD and the image after a dilation, A'B'C'D', what is true about the polygons? Check all that apply.

The length AB is 2.
The length A'B' is 3.
The image is smaller than the pre-image.
The scale factor is Three-halves.
The scale factor is Two-thirds.

Answers

For the given dilation of the polygons the correct answer are The length AB is 2. The length A'B' is 3. The scale factor is Three-halves.

What is dilation?

Resizing an item uses a transition called dilation. Dilation is used to enlarge or contract the items. The result of this transformation is a picture with the same shape as the original. Yet, there is a variation in the shape's size. The initial form should be stretched or contracted during a dilatation. The phrase "scale factor" describes this transition.

The distance formula for the coordinates is given as:

d(A, B) = |x1 - x2|

From the figure we observe that,

d(A, B) = |2 - 4|

d(A, B) = |-2|

d(A, B) = 2 units.

Hence, option A is correct.

Also, the length of A'B' is:

d(A', B') = |3 - 6| = |-3| = 3 units.

Hence, option B is correct.

The original shape is called the pre-image in a transformation (in this example, a dilation), and the transformed shape is called the image.

The third response is untrue since the picture is larger than the pre-image.

The scale factor of the images is:

2k = 3

k = 3/2.

Hence, option 4 is correct.

The last option is also false, as the scale factor is already determined.

Hence, for the given dilation of the polygons the correct answer are The length AB is 2. The length A'B' is 3. The scale factor is Three-halves.

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The complete question is:

Select whether the equation has a solution or not. x-8+-/x2-8 roots no roots

Answers

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 Information

The function is given as follows:

[tex]x - 8 = -\sqrt{x^2 - 8}[tex]

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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?

Answers

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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This is the same information as you’ll use in the next question.

The equation for the period of a pendulum is given by T space equals space 2 straight pi square root of straight L over 32 end root where T is the time (in seconds) and L is the length of the pendulum (in feet).

Find the approximate amount of time of the period of a pendulum if its length is 12 feet.

Answers

The approximate amount of time period of a pendulum with a length of 12 feet is 1.85 seconds.

What is calculus?

Calculus is a branch οf mathematics that deals with the study οf change and hοw things change οver time.

We can use the given equatiοn fοr the periοd οf a pendulum:

T = 2π√(L/32)

Substituting L = 12, we get:

T = 2π√(12/32)

Simplifying:

T ≈ 1.85 seconds

Hence, the approximate amount of time of the period of a pendulum with a length of 12 feet is 1.85 seconds.

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Use the clues to crack the code the number is greater than ten the value of the ones digit is ten times the value of the tenths digit Code number (5, 5, 7,

Answers

Given that there is only one digit left and the sum is more than 10, the third digit must be 7, which it is. and the pass code to open anything it is guarding is 5 5 7, which may be inputted.

To decode the code, we know that the number is more than 10 and has three digits: . Moreover, we are aware that the value of the ones digit is 10 times that of the tenths digit. The code is 5 5 7, as may be inferred from the provided hints.

Given that the code contains two 5s, the first digit must be 5. As the value of the ones digit is 10 times that of the tenths number, the second digit must likewise be 5, which is 5. The number is bigger than 10, hence the third digit must be 7, as it is the only one still present.

In order to open whatever it is guarding, the code, which is 5 5 7, may be input.

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ivy received a bank statement reposrting the recent changes to her account. the statement showed an overall increase in the account balance of $1,692.45. during the time shown on the statement, ivy was paid twice and withdrew a total of $1,876.23 to cover all her bills and expenses. how much (x) is each of ivay's paychecks? help me please

Answers

if Ivy received two Paychecks during the time period shown on the statement, each paycheck would be $1,784.34.

To find out how much each of Ivy's paychecks is, we need to subtract the amount she withdrew from her account from the overall increase in her account balance.

So, the calculation would be:

Overall increase in account balance - Total amount withdrawn = Total amount deposited

$1,692.45 - $1,876.23 = -$183.78

This means that Ivy actually spent more than she earned during the time period shown on the statement. Therefore, we cannot determine the amount of each of her paychecks with the given information.

However, if we assume that Ivy did not have any other income or expenses during the time period, we can use the following equation:

2x - $1,876.23 = $1,692.45

where x is the amount of each paycheck.

Simplifying the equation, we get:

2x = $3,568.68

x = $1,784.34

Therefore, if Ivy received two paychecks during the time period shown on the statement, each paycheck would be $1,784.34.

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Trinagle abc is similar to triangle def. The following ratios of corresponding sides are equal. 8/10 = 16/20 = 4x+6/4x+11

Answers

The value of x is 0. This means that [tex]8/10 = 16/20 = 4x+6/4x+11[/tex], so the corresponding sides of triangles abc and def have the same ratio.

The similarity of two triangles can be determined by the ratio of their corresponding sides. In the case of triangles abc and def, the ratio of corresponding sides is [tex]8/10 = 16/20 = 4x+6/4x+11[/tex].

To calculate the value of x, we can use the first two ratios and cross-multiply. With 8/10 = 16/20, we get 8*20=16*10, which simplifies to 160=160. Therefore, the first two ratios are equal.

To calculate the value of x using the third ratio, we can use the same method. With 4x+6/4x+11, we get ([tex]4x+6)*(4x+11)=4x^2+44x+66[/tex]. This simplifies to [tex]4x^2+44x+66=4x^2+44x+66[/tex], so the third ratio is also equal.

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Complete question:

What is the value of x in the ratio 8/10 = 16/20 = 4x+6/4x+11?

What is 24/32 reduced as much as possible?

Answers

Answer:

3/4

Step-by-step explanation:

Hope this helps! Pls give brainliest!

Find GCF = 8

Divide


Solution:

3/4

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.

Answers

Answer:

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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Have a great day! <33

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

Answers

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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Consider the following set of numbers:
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
What is the probability of drawing an odd number or a
multiple of 3?

Answers

The probability of drawing an odd number or a multiple of 3 is 1/5.

What is probability?

Probability is simply the chance that something will happen.

Whenever the outcome of an event is uncertain, we can speak of the probability, or likelihood, of a particular outcome.

Analyzing events according to their probabilities is called statistics.

So, the given data set is:

{1, 2, 3, 4, 5, 6, 7, 8, 9, 10)

Odd multiples of 3 are 3 and 9.

Then, the probability would be:

P(E) = 2/10

P(E) = 1/5

Therefore, the probability of drawing an odd number or a multiple of 3 is 1/5.

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The graph shows the predicted population of a town, z number of years after 2020. According to the graph, which statement is true?

Answers

According to the graph, the true statement is the population will increase more each year than the previous year. The Option B is correct.

What does population increase means?

in geography context, a population growth means the increase in the number of humans on Earth. In human history, the population size was relatively stable. But with innovation and industrialization, energy, food, water, and medical care became more available and reliable.

On this graph, we can observed how the population increases from 80,000 to 100,000, 120,000, 140,000, 160,000, 180,000, 200,000,  220,000. 240,000, 260,000 and 280,000 on the Y-Axis. Therefore, the statement that population will increase more each year than the previous year is true.

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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

Answers

Answer:

8 months

Step-by-step explanation:

I got it right

The area of the triangle below is 1/16 square centimeters. What is the length of the base. Express your answer as a fraction in simplest form

Answers

The length of the base is 1/64 and can be simplified to the fraction 1/64 = 1/64 in simplest form.

What does fraction mean?

A fraction is a mathematical expression which represents a part of a whole. It is written as a ratio that compares two numbers, the numerator and denominator. The numerator indicates the number of parts, the denominator indicates the total number of parts that make up the whole. Fractions can be expressed as decimals, percentages, and other forms of representation.

To solve this problem, we must use the formula for area of a triangle. This formula states that the area of a triangle is equal to one-half the product of the base and the height. In this problem, the area of the triangle is given as 1/16 square centimeters. This means that the base times the height must equal 1/8.

To find the length of the base, we must isolate the base from the equation. To do this, we must divide both sides of the equation by the height. This will leave us with the equation base = 1/8/height. Since the height is unknown, we can solve for it by taking the reciprocal of the base. This will give us the equation height = 1/8/base.

Combining both equations, we can solve for the base by multiplying both sides of the equation by 1/8. This will give us the equation base = (1/8)(1/8) = 1/64. The length of the base is 1/64 and can be simplified to the fraction 1/64 = 1/64 in simplest form.

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i need the answers for this? 8th grade math

Answers

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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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...
.

Answers

The slope of the line is

3

This means that

6mm

of rain falls every

1hr

Simplify the square root of 7 divided by 20

Answers

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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42. Let P(A)=0.70,P(B∣A)=0.55 , and P(B∣A C )=0.10 . Find the following probabilities: a. P(A C ) b. P(A∩B) and P(A C ∩B) c. P(B) d. P(A∣B) 43. Complete the following probability table.

Answers

Here is the probability table to be completed:   A B P(A∩B) P(A∣B) 0.54 0.47 0.38 0.70 0.46 0.32 0.30 x 0.28 0.27 0.42 0.20 0.15 0.35 0.45

42. Let P(A) = 0.70, P(B∣A) = 0.55, and P(B∣AC) = 0.10. The following probabilities are found: a. P(AC) = 0.30 b. P(A∩B) = P(B∣A) × P(A) = 0.55 × 0.70 = 0.385 P(AC∩B) = P(B∣AC) × P(AC) = 0.10 × 0.30 = 0.03 c. P(B) = P(B∣A) × P(A) + P(B∣AC) × P(AC) = 0.55 × 0.70 + 0.10 × 0.30 = 0.415 d. P(A∣B) = P(B∣A) × P(A) / P(B) = 0.55 × 0.70 / 0.415 = 0.9289 43. Here is the probability table to be completed:   A B P(A∩B) P(A∣B) 0.54 0.47 0.38 0.70 0.46 0.32 0.30 x 0.28 0.27 0.42 0.20 0.15 0.35 0.45

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Hey can someone help me pleaseeee SOLVE WITH EXPLANATION!!! >:(

Answers

so to find the slip you need at least two points, in this case 2 points are given

The equation for slope is
Y2-y1/x2-y1= slope
The points we have are
(1,-5)
(-3,3)

Y=3-5=-2
X= -3-1=-4

-2/-4 the negatives cancel out leaving
2/4 and you can simplify this by dividing both parts by 2
1/2 is the final answer

240

Use the ratio 1. What operation can you do on both terms to find

an equivalent ratio that has 1 as the second term?

Answers

Answer:

You need to first identify the dum it's always multiplication

hope this helps good luck

3⋅5 1 ​ +2 can anyone help with this I really tried my best and I've been hard working at this but I'm still stuck at it

Answers

35 1 + 2 = 17. To remember the mathematical operations in the correct order, people frequently use the abbreviation PEMDAS.

You must follow the order of operations, often known as PEMDAS, to evaluate this equation. Parentheses, exponents, multiplication and division (left to right), addition, and subtraction are all referred to as PEMDAS (from left to right).

When using PEMDAS, you would first calculate the output of the parenthesized expression—which is 3 times 5—and then add 2.

Thus, 35 1+2 reduces to:

3*5 1 + 2 = (3*5) + 2 (first calculate within the parentheses) = 15 + 2 (conduct multiplication) = 17 (perform addition)

Hence, 35 1 + 2 = 17.

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JKLM is a rhombus. m/MLN = (9a + 11)° m /KLM = (-4a + 66)°
Find the m2KJM.

Answers

The value of ∠2KJM for the rhombus is ∠JKM = 23 + (5a/2).

What is rhombus?

A parallelogram is a particular instance of a rhombus. The opposing sides and angles in a rhombus are parallel and equal. A rhombus also has equal-length sides on each side, and its diagonals meet at right angles to form its shape. The rhombus is sometimes referred to as a diamond or rhombus. Rhombi or rhombuses are the plural forms of rhombus.

Let us suppose the measure of angle = x.

For rhombus all the four angles are congruent, thus,

∠MLN = (9a + 11)°

∠KLM = (-4a + 66)°

∠JLN = x

∠KLJ = x

The sum of the angles of a quadrilateral is 360 degrees, so:

∠JKL + ∠KLM + ∠MLN + ∠NJL = 360

Since JKL and NJL are vertical angles, they are congruent:

∠JKL = ∠NJL = x

Substituting in the given angles, we get:

x + (-4a + 66) + (9a + 11) + x = 360

2x + 5a + 77 = 360

2x = 360 - 5a - 77

2x = 283 - 5a

x = (283 - 5a)/2

Now, ∠JKM = 180 - ∠JKL

∠JKM = 180 - x

∠JKM = 180 - (283 - 5a)/2

Simplifying, we get:

∠JKM = 23 + (5a/2)

Hence, the value of ∠2KJM for the rhombus is ∠JKM = 23 + (5a/2).

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Which is the smallest?

(a) -1,

(b) -1/2,

(c) 0,

(d) 3.

Answers

Answer:

A

because it is a negative number and because it is less than -1/2

Answer:

Step-by-step explanation:

the answer is -1 as negative integers become smaller as they go to the left.

no problem

solve the following system of equation y=x^2-32 y=x+10

Answers

x=(17,4)^2+(−340,−80)+58y= y^2−20y+68

y=y^2−20y+68

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

Answers

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.

What is the area?
6 ft:
6 ft
10 ft
square feet

Answers

Step-by-step explanation:

6x6x10 FT = 1 sq cube foot

Create an exponential equation passing through points (1960, 179323175) and (2010, 308745538) Round (a) and (b) to 3 decimal places

Answers

The exponential function passing through the points (1960, 179323175) and (2010, 308745538) is given as follows:

y = 0.1(1.01092581)^x.

How to define the exponential function?

The standard definition of an exponential function is given as follows:

y = ab^x.

In which the coefficients a and b are explained as follows:

a is the initial value.b is the rate of change.

The points for this problem are given as follows:

(1960, 179323175) and (2010, 308745538).

Considering that between 1960 and 2010 there is an increase of 50 in the input, the parameter b is obtained as follows:

b^50 = 308745538/179323175

b = (308745538/179323175)^(1/50)

b = 1.01092581.

Hence:

y = a(1.01092581)^x.

When x = 1960, y = 179323175, hence the parameter a is obtained as follows:

a = 179323175/[(1.01092581)^1960]

a = 0.1.

Hence the function is:

y = 0.1(1.01092581)^x.

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Add the number that would make the expression a perfect square. Next, write an

equivalent expression in factored form. Do not put spaces in your answers.

1. X2 + 3x+

= (x+

2. X2 + 0. 6x+

= (x+

Answers

a) We need to add 2.25 to the expression to make it a perfect square and equivalent expression is (x + 1.5)^2.

b) We need to add 0.09 to the expression to make it a perfect square and equivalent expression is (x + 0.3)^2.

a) To make the expression X^2 + 3x + ___ a perfect square, we need to add a number that is equal to half of the coefficient of x, squared. In this case, half of 3 is 1.5, and 1.5 squared is 2.25.

X^2 + 3x + 2.25 = (x + 1.5)^2

The equivalent expression in factored form is (x + 1.5)^2, which represents a perfect square trinomial.

b) Similarly, to make the expression X^2 + 0.6x + ___ a perfect square, we need to add a number that is equal to half of the coefficient of x, squared. In this case, half of 0.6 is 0.3, and 0.3 squared is 0.09. Therefore, we need to add 0.09 to the expression to make it a perfect square:

X^2 + 0.6x + 0.09 = (x + 0.3)^2

The equivalent expression in factored form is (x + 0.3)^2, which represents a perfect square trinomial.

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help me bro help me bro help me bro help me bro help me bro

Answers

By writting all the numbers as decimals we can see that the lake that lost the least amount of water is the last one.

Which lake lost the least amount of water?

The first lake lost a fraction of 5/6 of its total water.

The second lake lost the 85% of its water.

The last lake lost a fraction of 246/300 of its water.

We want to see which of these 3 numbers is the smaller one, we can write all of them as decimals ot get:

5/6 = 0.833

85% = 0.85

246/300 = 0.82

With this we conclude that the lake that lost the least amount of water is the last one.

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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.

Answers

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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