If 90 is 80% of a value, what is that value?

Answers

Answer 1

Answer:

The value of the number will be equal to 112.5.

What is the percentage?

The Percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.

Given that 90 is equal to 80% of the number. The value of the number will be calculated below,

Let n be the unknown number the value of n will be calculated as below,

80% = 4 / 5

4/5n=90

4n=450

n=450/4

n=112.5

Therefore, the value of the number will be equal to 112.5.

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Answer 2

Answer: So 90 is 4/5 of a number.

4/5n=90

4n=450

n=450/4

n=112.5

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How do you multiply to find an equivalent fraction of. 3/10

Answers

You multiply both the numerator and the denominator by the same number (but not 1 or 0), but don't simplify. 3/10 is your fraction, and you could multiply the top and bottom numbers by 2 to get 6/20.

What's 3 17/100 as a decimal

Answers

3 17/100 as a decimal is 3.17

3.17 because 3 is the whole number and 17 out of 100 is 17 hundredths

Whats the gcf of 48 and 78

Answers

The greatest common factor (GCF) of 48 and 78 is: 6

Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
Factors of 78: 1, 2, 3, 6, 13, 26, 39

The common factors between the two numbers are 1, 2, 3, and 6, but considering 6 is the highest number out of them, it is the greatest common factor.

we must find prime factoriztion 4 getting GCF

FACTORS OF 48 : 1,2,3,4,6,8,12,16,24 & 48
FACTORS OF 78 : 1,2,3,6,13,26,39 & 78

WE can see the common factors of 48 and 78 are: 1,2,3 & 6
it means the GCF of 78 & 48 is 6

PLEASE help with these math questions

Answers

Pythagorean theorem: a² + b² = c²
a = long leg
b = short leg
c = hypotenuse

graph can form a right triangle:
JK: a = 7 - 3 = 4 ; b = 5 - 3 = 2
⇒ 4² + 2² = c² ⇒ 16 + 4 = 20 ; c = √20 = 4.47 or 4.5 units

VW: a = 6 - (-2) = 6 + 2 = 8 ; b = -3 - (+4) = 7
⇒ 8² + 7² = c² ⇒ 64 + 49 = 113 ; c = √113 = 10.63 units

EG: a = 7 - (-2) = 7 + 2 = 9 ; b = 9 - 1 = 8
⇒ 9² + 8² = c² ⇒ 81 + 64 = 145 ; c = √145 = 12.04 units

EG: a = -1 - 6 = 7 ; b = 2 - (-2) = 2 + 2 = 4
⇒ 7² + 4² = c² ⇒ 49 + 16 = 65 ; c = √65 = 8.06 units

Trapezoid: Rectangle and right triangle.

Rectangle = 1 side of the width is the long leg of the right triangle.

a = 8 - 2 = 6 ; b = 12 - 9 = 3
6² + 3² = c² ; 36 + 9 = 45 ; c = √45 = 6.71 units

upper base:CD: 9 - 2 = 7
lower base: BA: 12 - 2 = 10
side: DA: 8 - 2 = 6
side: CB: 6.71

Perimeter = 7 + 10 + 6 + 6.71 = 29.71 units

The first one is just some simple application of Pythagora's theorem.

Since you go up -2 (no negative lengths), and across 4. You can apply the theorem to get:
2^2 + 4^2 = x^2
x = 4.4721
x = 4.5

I won't answer all of these for you, if you need more help just say please.

7 as a percentage of 20

Answers

7 as a percentage of 20 just means what percentage of 20 is 7. To do this, we must divide 7 by 20. This is how you answer this. If you do so, then you will get 0.35. This shows that it is 35%. Note that when you get a decimal number, then you must multiply it by 100% to get the percentage equivalent of that number. Therefore, 7 as a percentage of 20 is 35%.

To find 7 as a percentage of 20, all you need to do is divide 7 by 20.

7 ÷ 20 = 0.35

And then, all we need to do is convert the resulting decimal into a percentage. We can do this by either multiplying the result by 100, or (my personal shortcut) just shifting the decimal point over two places to the left.

0.35 = 35%

Which is our answer.
7 is 35% of 20.
Hope that helped! =)

Select all rational numbers I need help asap

Answers

the correct answers are a, c, & d. any numbers including a square root sign or pi are not rational numbers!

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