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RSB [31]
3 years ago
9

15 is 75% of what number?

Mathematics
1 answer:
Allisa [31]3 years ago
8 0

Answer:

The answer would be 20

Step-by-step explanation:

75% is 75/100,

15 equals 75/100,

75/100 = 15/x.

x = 15 * 100 / 75 = 20.

the answer is 20.




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?
lilavasa [31]

The count of the equilateral triangle is an illustration of areas

There are 150 small equilateral triangles in the regular hexagon

<h3>How to determine the number of equilateral triangle </h3>

The side length of the hexagon is given as:

L = 5

The area of the hexagon is calculated as:

A = \frac{3\sqrt 3}{2}L^2

This gives

A = \frac{3\sqrt 3}{2}* 5^2

A = \frac{75\sqrt 3}{2}

The side length of the equilateral triangle is

l = 1

The area of the triangle is calculated as:

a = \frac{\sqrt 3}{4}l^2

So, we have:

a = \frac{\sqrt 3}{4}*1^2

a = \frac{\sqrt 3}{4}

The number of equilateral triangles in the regular hexagon is then calculated as:

n = \frac Aa

This gives

n = \frac{75\sqrt 3}{2} \div \frac{\sqrt 3}4

So, we have:

n = \frac{75}{2} \div \frac{1}4

Rewrite as:

n = \frac{75}{2} *\frac{4}1

n = 150

Hence, there are 150 small equilateral triangles in the regular hexagon

Read more about areas at:

brainly.com/question/24487155

4 0
3 years ago
The sum of two rational number is 7 if if one of the number is minus 9 by 14 find the other​
Lady_Fox [76]

Answer:

y'all are still in school that must be tuff

3 0
3 years ago
If f(x) = - 2x2 + 2x - 3, what is f(5)?<br><br> A) -93 <br> B) -43 <br> C) -28 <br> D) -<br> 43/5
andrew-mc [135]

Answer:

The answer to your question is letter B

Step-by-step explanation:

Process

1.- Write the function

                                 f(x) = - 2x² + 2x - 3

Find f(5)

2.- Substitute x for 5

                                f(5) = -2(5)⁵ + 2(5) - 3

3.- Simplify

                                f(5) = -2(25) + 10 - 3

                                f(5) = -50 + 7

                                f(5) = -43

8 0
3 years ago
Question: Determine what the constant, coefficient, and variable are in the expression 7-25f.
vova2212 [387]

Answer:

see below

Step-by-step explanation:

<u>Given:</u>

Binomial 7 - 25f

  • 7 = constant, it is a number as a term
  • 25 = coefficient, it is a number which is multiplied by a letter (variable)
  • f = variable, which is normally identified as a letter, it is degree one
7 0
3 years ago
11 1 1 point Find the circumference of the circle. Do NOT round your answer. 16.8 m​
ladessa [460]

Step-by-step explanation:

22/7*1111=3491

this is the ams

6 0
3 years ago
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