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4 years ago

5

What would be the area of a regular polygon with a perimeter of 20 feet and an apothem of 3 feet

1 answer:

Rama09 [41]4 years ago

7 0

$\bf \textit{area of a regular polygon}\\\\ A=\cfrac{1}{2}ap~~ \begin{cases} a=apothem\\ p=perimeter\\[-0.5em] \hrulefill\\ a= 3\\ p=20 \end{cases}\implies A=\cfrac{1}{2}(3)(20)\implies A=30$

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Taylor earned the following scores on her first ten quizzes. What would she need to earn on the eleventh test in order to have a

Sauron [17]

A mean is an arithmetic average of a set of observations. The score that Taylor needs to make in her eleventh test for the average to be 87 is 93.

<h3>What is Mean?</h3>

A mean is an arithmetic average of a set of observations. it is given by the formula,

Mean = (Sum of observations)/Number of observations

The score earned by Taylor in her first 10 test are 78, 92, 98, 87, 86, 72, 92, 81, 86, 92. Also, she wants the average to be 87, therefore, we can write,

(78 + 92 + 98 + 87 + 86 + 72 + 92 + 81 + 86 + 92 + x)/11 = 87

864 + x = 957

x = 93

Hence, The score that Taylor needs to make in her eleventh test for the average to be 87 is 93.

Learn more about Mean:

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2 years ago

Please help me!!!!! Its exponents!

Vlad [161]

Answer:

Please check the answer below.

Step-by-step explanation:

Considering the statement

$2^?$

If $?$ is an whole number.

Set of whole number = {0, 1, 2, 3, ....}

Example 1:

<u><em>When statement is always true:</em></u>

For x > 0, the statement will be always be true.

Lets put x = 1

$2^1$

2 < 3

So, the statement is true when x = 1

Example 2:

<em><u>When statement is always true:</u></em>

For x > 0, the statement will be always be true.

Lets put x = 2

$2^2$

4 < 9

So, the statement is true when x = 2

Example 3:

<em><u>When statement is Never true:</u></em>

For x = 0, the statement will never be true.

Lets put x = 0

$2^0$

$\mathrm{Apply\:rule}\:a^0=1,\:a\ne \:0$

$2^0=1, 3^0=1$

So,

$1$

Therefore, the statement is False.

Keywords: exponential number, whole number

Learn more about exponential number from brainly.com/question/3141841

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6 0

3 years ago

Y = 2x – 15<br> y = 5x<br> Can anyone tell me the steps how to solve this and the answer

Brilliant_brown [7]

Use substitution
Plug in 5x for y
5x = 2x - 15
Subtract 2x
3x = -15
Divide by 3
x = -5, y = -25
Solution: (-5, -25)

5 0

3 years ago

In a 45-45-90 triangle, what is the length of the hypotenuse when the length of one of the legs is 5 in.?

artcher [175]

The awnser is 15 inches because 1 leg is 5 inches so you times it by 3 because there is three legs and you get 15

8 0

4 years ago

3. Rectangle J is 6 feet wide and 9 feet long.

Furkat [3]

Answer:

No it's not!

Step-by-step explanation:

because the length (long) of J and K are totally different whereas the breadth(width) of J and K is also different which does make similar in sense

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3 years ago