The ratio of the areas of two similar polygons can be found by using the ratio of their perimeters or the ratio of similarity and squaring it. Always Sometimes Never

Answers

Answer 1

The ratio of the areas of two similar polygons can be found by squaring the ratio of their perimeters or corresponding linear dimensions, but this method only works sometimes, specifically with similar polygons, and not with non-similar ones.

The ratio of the areas of two similar polygons is indeed found by taking the ratio of their corresponding linear dimensions and squaring it. This is because the area is a two-dimensional measurement, whereas perimeter and linear dimensions are one-dimensional. For similar polygons, which are polygons that have the same shape but may have different sizes, any linear dimensions (such as sides, perimeters, diagonals) are proportional.

When you have two similar polygons and you know the ratio of their perimeters, you can use this perimeter ratio to find the ratio of their corresponding side lengths since the ratio of the perimeters of similar polygons is equal to the ratio of their corresponding linear dimensions. After finding this linear ratio, you square it to obtain the ratio of their areas because if one dimension is multiplied by a scale factor 's', the area is multiplied by 's' squared (scale factor squared).

It is important to note, however, that this rule only applies to similar polygons (similarity) and not to polygons that aren't similar, since non-similar polygons do not have a constant ratio of corresponding linear dimensions. Therefore, to answer the original question, the method works sometimes, specifically when dealing with similar polygons.


Related Questions

what is 3 fifths times one and 1third

Answers

3/5 x 1  1/3

Turn to an improper fraction (it's easier for me xP)
 3        4
---- x  ----
 5        3

Solve 
 3        4          12
---- x  ----   =  ------
 5        3          15

Simplify
 12    ÷   3  =  4
-----              ----
 15    ÷   3  =  5

4/5 is your answer

Find a recurrence relation for the number of n-digit ternary sequences in which no 1 appears anywehere to the right of a 2

Answers

Let [tex]A[/tex] denote the set of such sequence of length [tex]n[/tex], and take [tex]a(n)[/tex] to be the size of [tex]A[/tex], i.e. the number of such sequences of length [tex]n[/tex] consisting of digits 0, 1, or 2.

Split up this set of sequences according to whether a given sequence contains a 2 or does not contain a 2. Let's denote these subsets by [tex]B[/tex] and [tex]\hat B[/tex], respectively, and denote their sizes by [tex]b(n)[/tex] and [tex]\hat b(n)[/tex]. Clearly, [tex]a(n)=b(n)+\hat b(n)[/tex].

Since every sequence in [tex]B[/tex] contains a 2, the only new digit we can append to these sequences must be a 0 or a 2. On the other hand, to every sequence in [tex]\hat B[/tex] we can add any of 0, 1, or 2. So,

[tex]a(n+1)=2b(n)+3\hat b(n)[/tex]
[tex]\implies a(n+1)=2a(n)+\hat b(n)[/tex]

[tex]\hat B[/tex] is the set of all sequences not consisting of 2s, which means [tex]\hat b(n)=2^n[/tex]. There are 3 possible such sequences of length 1, so we can recursively define the total number of such sequences by

[tex]\begin{cases}a(1)=3\\a(n+1)=2a(n)+2^n&\text{for }n\ge1\end{cases}[/tex]
Final answer:

To find a recurrence relation for the number of n-digit ternary sequences in which no 1 appears anywhere to the right of a 2, we can consider two cases depending on the last digit being 0 or 2.

Explanation:

To find a recurrence relation for the number of n-digit ternary sequences in which no 1 appears anywhere to the right of a 2, we can break the problem down into two cases: when the last digit is 0 or when the last digit is 2. If the last digit is 0, then the number of n-digit ternary sequences is equal to the number of (n-1)-digit ternary sequences in which no 1 appears anywhere to the right of a 2. If the last digit is 2, then the number of n-digit ternary sequences is equal to the number of (n-1)-digit ternary sequences in which no 1 appears anywhere to the right of a 2, plus the number of (n-1)-digit ternary sequences in which no 1 appears anywhere to the right of a 2.

Simplify: 4w(to the power of 9)+(-2w(to the power of 9)) enter the original expression if it cannot be simplified

Answers

4w⁹ -2w⁹
= (4-2)w⁹ . . . . . distributive property, or "collecting terms"
= 2w⁹

_____
In plain text, a caret (^) is used to identify an exponent. w⁹ = w^9. If the exponent has any arithmetic, you need parentheses around it. w^(8+1)

What is the rule for this pattern of numbers?

Answers

multiply by 2 then add 2

28 is 12 less than k

Answers

the value of k is 40.

to solve for k when 28 is 12 less than k, we set up an equation and then solve it.

Let's denote k as the unknown number. According to the problem, 28 is 12 less than k, which can be written as:

28 = k - 12

To solve for k, we need to isolate k on one side of the equation.

28 = k -12

28 + 12 = k

40 = k

k = 40

So, the value of k is 40.

The complete question is:

28 is 12 less than k. 28=12-k Solve for k.

A bakery makes 640 muffins everyday. which equation shows how to find the number of muffins the bakery makes in a week?

Answers

640 * 7 is the answer
Hey there!

Since there are 640 muffins everyday, and there are 7 days in a week, you can use the equation " 640 x 7" to find out how many muffins the bakery makes in a week.

640 x 7 = 4,480
The bakery makes 4,480 muffins in 1 week. <-----

Hope this helps you.
Have a great day!

Mel Sturbridge needs $24,700 to remodel his home.
Find the face value of a simple discount note that will provide the $24,700 in proceeds if he plans to repay the note in 180 days and the bank charges an 8% discount rate.

Round to the nearest cent.

Answers

24,700 = P*(1 -rt)
P = $24,700/(1 -0.08*(180/360)) = $25,729.17 . . . . . assuming a 360-day year

The face value is $25,729.17.
Final answer:

To find out the face value of a simple discount note that will provide a proceed of $24,700 with an 8% discount rate for 180 days, use the formula FV = P / (1 - (r * t)). Plug in the given values and compute the answer. The result is the required face value and should be rounded to the nearest cent.

Explanation:

To find out the face value of a simple discount note, we can use the formula FV = P / (1 - (r * t)) where FV represents the face value, P is the proceeds, r is the discount rate, and t is the time in years.

In the problem, P = $24,700, r = 8% or 0.08 (expressed as a decimal), and t = 180/365 because there are 365 days in a year and the note is for 180 days. Let's substitute these values into the formula:

FV = 24700 / (1 - (0.08 * (180/365))

When you calculate the expression on the right, the answer will be the face value required to get a proceed of $24,700 with an 8% discount rate for 180 days. Round to the nearest cent for your final answer.

Learn more about Simple Discount Note here:

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1.find the slope between these 2 points:(5,-5) and(3,-5)

2.find the slope between these two points:(2,3)and (4,5)

3.find the slope between the two points (-5,5)and (3,-5)

4.find the slope between these two points (9,9) and (12,15)

Answers

1. 2
2. 2√2
3. 2√14
4. 3√5
I provided the distance formula and and example for you.

Final answer:

To find the slope between two points, use the formula m = (Y2 - Y1) / (X2 - X1) where (X1, Y1) and (X2, Y2) are the coordinates of the two points. The slopes for the given point sets are: 0, 1, -5/4, and 2.

Explanation:

To find the slope between two points, we can use the formula:
m = (Y2 - Y1) / (X2 - X1)
where (X1, Y1) and (X2, Y2) are the coordinates of the two points.

For the first set of points (5, -5) and (3, -5), the slope is:
m = (-5 - (-5)) / (3 - 5) = 0 / -2 = 0

For the second set of points (2, 3) and (4, 5), the slope is:
m = (5 - 3) / (4 - 2) = 2 / 2 = 1

For the third set of points (-5, 5) and (3, -5), the slope is:
m = (-5 - 5) / (3 - (-5)) = -10 / 8 = -5/4

For the fourth set of points (9, 9) and (12, 15), the slope is:
m = (15 - 9) / (12 - 9) = 6 / 3 = 2

A rectangle is dilated by a scale factor of 4.

a) The original rectangle is 8 cm by 3 cm. What are the dimensions of the new rectangle?

b) Is the new image a reduction or enlargement? Explain.

HELP PLEASE

Answers

The dimensions of the new rectangle would be 32 cm by 12 cm.  This is an enlargement.

Since the scale factor is 4, we multiply the dimensions of the original rectangle, the preimage, by 4.  8*4 = 32 and 3*4 = 12.

Since the new dimensions are larger than the old dimensions, it is an enlargement.

What is the mean absolute deviation for the set of data below?

2, 8, 10, 16

Answers

Solution: We are given below data:

[tex] 2, 8, 10, 16 [/tex]

Now to find the mean deviation, we use the below formula:

[tex] MD= \frac{\sum|X-\bar{X}|}{N} [/tex]

Where:

[tex] \sum, [/tex]  represents the summation

X, represents the observation.

[tex] \bar{X}, [/tex] represents the mean

N represents the number of observation.

[tex] \bar{X}= \frac{\sum{X}}{N}= \frac{2+8+10+16}{4}=9 [/tex]

[tex] \sum |X-\bar{X}| = |2-9| + |8-9| +|10-9| +|16-9|=7+1+1+7=16 [/tex]

Therefore, the mean deviation is:

[tex] MD= \frac{16}{4} [/tex]

        = 4

Answer:

4 \

Step-by-step explanation:

There is only one granola bar left out of a pan of 10 bars. If will and Rachel decide to split the last granola bar, what fraction of the entire pan of granola bars will each friend receive?

Answers

[tex] \frac{1}{20} [/tex]

The entire pan has a total of 10 granola bars, and there is one tenth of the pan left. Will and Rachel will split the last one tenth in half, so the two fractions that need to be multiplied are: 

[tex] \frac{1}{2} * \frac{1}{10} [/tex]

So, Will will receive [tex] \frac{1}{20} [/tex] of the pan and Rachel will

receive [tex] \frac{1}{20} [/tex] of the pan. 

A local park rents cabins for people who want to vacation by the forest. The fee for the rental is $27 per night.There is also $55 cleaning and maintenance charge that is added to the total bill.
Define variables for the number of days that a cabin is rented and the cost of the rental. Use the variables to write an equation that represents the cost to the rent the cabin,given the number of days that the cabin is rented.

Please answer as quickly as possible this is URGENT

Answers

x represents the total number of nights rented.  $55 is the constant.

$27x + 55

If x = 30, what does 55 + x - 27 equal?

Answers

Answer:

  58

Step-by-step explanation:

Put 30 where x is in the expression and do the arithmetic.

  55 + 30 - 27 = 85 - 27 = 58

__

It can be advantageous to use the associative property of addition to evaluate the expression as ...

  55 + (30 -27) = 55 +3 = 58

Find two numbers, if Their sum is 3/5 and their difference is 7 1/5

Answers

Set up a system of equations:

x + y = 0.6
x - y = 7.2

You can solve using elimination. Add the two equations together:

2x + 0y = 7.8
2x = 7.8
x = 3.9

Then plug the number back into either of the two original equations to solve for y:

3.9 + y = 0.6
y = -3.3

The two numbers are 3.9 and -3.3

Answer:

3.9 and -3.3

Step-by-step explanation:

A patio has an area of 432 square feet the width of the patio is 3/4 its length what is the length

Answers

area = L x W

W = 0.75L

432 = L x 0.75L

432 = 0.75L^2

L^2 = 432/0.75
L^2 = 576

L = sqrt(576) = 24

Length = 24 feet

24r3-64r2-21r+56 answer

Answers

[tex]The answer is: (3r-8)(8r^{2}-7) [/tex]

Mr. Harrow has eight boys and six girls in his Honors Precalculus class. If he randomly chooses two students, one at a time, what is the probability that they are both girls

Answers

It may be that he chose from a side, so maybe there were more girls than boys on the left side, the side he chose from.

Find |p|.....................

Answers

P = 15 + 9 = 24
 Answer is 24

Make a line graph of the data in the table and conjecture on the minimum degree of a polynomial model...

Answers

When you plot the given points, you obtain the graph attached. As you can see, the function has two turning points, so:

 Minimum degree=(2 turning points)+1=3

 Therefore, the minimum degree of a polynominal model is 3, and it can be expressed as below:

 f(x)=ax³+bx+cx+d

 The answer is:3
 

Write 4/10 as a fraction with a denominator of 100. Then write 4/10 as a decimal.
Would it be 4/100 or 40/100? The decimal would be 0.4 ?

Answers

4/10 = (4x10)/(10x10) = 40/100

4/10 = 0.4

PLEASE HELP ME!
Find each value. Use a calculator if needed.

ORDER MATTERS!

a) P(12, 5)
= A. 60 B. 248,832 C. 95,040 D. 300

b) P(8, 8)
= A. 64 B. 40,320 C. 30,555 D. 16

Answers

Presumably, [tex]P(n,k)[/tex] refers to the number of ways we can pick [tex]k[/tex] objects from a pool of [tex]n[/tex] objects in a certain order. We have

[tex]P(n,k)=\dfrac{n!}{(n-k)!}[/tex]

so

[tex]P(12,5)=\dfrac{12!}{(12-5)!}=\dfrac{12!}{7!}=95,040[/tex]

[tex]P(8,8)=\dfrac{8!}{(8-8)!}=\dfrac{8!}{0!}=40,320[/tex]

You spin the spinner, flip a coin, then spin the spinner again. Find the probability of the compound event. Write your answer as a fraction or percent. If necessary round your answer to the nearest hundredth.
The probability of spinning an odd number, flipping heads, then spinning a yellow is ????

Answers

The answer to that problem is 1/9

probability  = number of favourable outcomes / total number of outcomes

probability of spinning any number = 1/3

probability of tossing a coin = 1/2

probability of compound event = 1/3 * 1/2 * 1/3 = 1/18

probability of spinning an odd number, flipping heads, then spinning a yellow is  = 2/3*1/2*1/3 = 1/9

a bowl of soup holds 7 ounces. If a spoonful holds 1/6 ounce, how many spoonfuls are in 3 bowls of soup? Tell the operation and explain how you got your answer

Answers

there will be 126 spoonful's

hope this helped

complete the ordered pair for the given equation. (_,-1);y=-3/5x-7

Answers

Hi!

So for this problem, we're given the y-coordinate and we can plug that in for y in the equation. So let's do that

-1 = -3/5x - 7
6 = -3/5x
30 = -3x
-10 = x

The missing coordinate would be x, assuming that the equation was y = (-3/5)x - 7

max has 2/3 lb. of chocolate. He wants to hand out the chocolate in packages to give to his friends he would like to put 1/6 lb. of chocolate. How many packages can Max make? solve with a visual model

Answers

2/3 = 4/6

Divide up the chocolates into 1/6 lb each:

4/6 ÷ 1/6 = 4/6 x 6/1 = 4

He can packed into 4 packages.

need help solving this

Answers

[tex] v = \omega r [/tex]

[tex] v = 2 \pi \dfrac{rad}{min} \times 1~km [/tex]

[tex] v = 2 \pi \dfrac{km}{min} [/tex]

[tex] v \approx 6.28 \dfrac{km}{min} [/tex]

The quadratic equation y = 2(x – 2)2 + 2 with no real solution is graphed. Which value of k will change the function to one with exactly one solution?

Answers

On the attached diagram red curve is the graph of the quadratic function [tex]y = 2(x - 2)^2 + 2.[/tex] As you can see this graph has no intersections with x-axis, this means that there are no solutions.

If you translate red curve 2 units down, you obtaine the graph (blue curve) of the function [tex]y = 2(x - 2)^2[/tex] and this graph has one common point with x-axis. This means that there will be exactly one solution.

Answer: k=-2 (you add -2 to the function [tex]y = 2(x - 2)^2 + 2[/tex] to obtain the function [tex]y = 2(x - 2)^2[/tex]).

Answer: 0 ZERO

Step-by-step explanation:

25 less than 6 time a number is 107. What is the number? How do you do that?

Answers

25 less than 6 times a number becomes,
6x - 25 = 107
    + 25   + 25
6x = 132
6x / 6 = 132 / 6
x = 22
Less than is another way to say minus and is is another way to say equals and times is self-explanatory.

25 less than 6 times a number is 107 then that number will be 22 it can be determined by the formation of the equation.

How to form an equation?

Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.

In other words, an equation is a set of variables that are constrained through a situation or case.

Let's say that number is x

6 times x number

⇒ 6x

25 less than 6x

⇒ 6x - 25

It is equal to 107

So,

6x - 25 = 107

6x = 132

x = 132/6

x = 22

Hence "25 less than 6 times a number is 107 then that number will be 22".

For more about the equation

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The Philips family had 3 cats. They needed to split 20 ounces of cat food among the three cats. How much cat food would each cat get? between what two whole numbers does your answer lie?

Answers

Final answer:

Each cat would get approximately 6.67 ounces of cat food, which falls between 6 and 7 ounces. The calculation is done by dividing the total amount of food (20 ounces) by the number of cats (3).

Explanation:

The Philips family had to split 20 ounces of cat food among their 3 cats. To find out how much food each cat gets, we need to divide the total amount of food by the number of cats. Calculating this, 20 ounces ÷ 3 cats equals approximately 6.67 ounces per cat. Even though this is a decimal, if we consider whole numbers, the amount each cat gets falls between 6 and 7 ounces, since 6.67 is more than 6 and less than 7.

When dealing with fractions and division, it's essential to understand the concept of division and be able to find averages. The task at hand may often find itself related to dividing a quantity evenly among a number of recipients, much like in scenarios where we have to split a pie or determine individual portions.

Final answer:

To divide 20 ounces of cat food equally among three cats, each cat gets approximately 6.67 ounces. The amount of food per cat lies between the whole numbers 6 and 7.

Explanation:

The question is asking how to divide 20 ounces of cat food equally among three cats. To find out how much each cat would get, you divide the total amount of cat food by the number of cats:

Determine the total amount of food: 20 ounces.Count the number of cats: 3 cats.Divide the total amount of food by the number of cats: 20 ounces ÷ 3 cats = approximately 6.67 ounces per cat.

This calculation shows that each cat would get approximately 6.67 ounces of food. This value lies between the whole numbers 6 and 7. Therefore, when the Philips family divides the cat food, each cat gets a little more than 6 ounces but less than 7 ounces of food.

What is the completely factored form of x2y – 2xy – 24y?

Answers

Factoring the expression we proceed as follows:
x^2y-2xy-24y
this can be simplified to:
x^2y-xy-xy-24y
=xy(x-1)-y(x-24)

Answer:

C: y(x + 4)(x – 6)

Step-by-step explanation:

I took the test on Edge -2022

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