3 years ago

20%of what number is 80?

Mathematics

2 answers:

prisoha [69]3 years ago

8 0

20% times n = 80

.20 n = 80

divide both sides by .2

n = 80/.2

n= 400

Answer: 400

Alex73 [517]3 years ago

5 0

the answer is 16 because .20 times 80 is 16

You might be interested in

Please help me solve this I forgot how to

RideAnS [48]

2.5

hope it helps//...,d/cmn/lsjdhc;ljwknefv

4 0

3 years ago

The larger of two numbers is 7 times the smaller number. Three times the larger number is 7 more than 4 times the smaller number

Juliette [100K]

Let the smaller number be x.

Given, the larger number is 7 times the smaller number.

So, the larger number = 7x.

Given, 3 times the larger number is 7 more than 4 times the smaller number.

So we can write the equation as,

$3(7x) = 4(x)+7$

$3(7x) = 4x+7$

$21x = 4x+7$

Now we have to move 4x to the left side by subtracting 4x from both sides.

$21x-4x = 4x-4x+7$

$21x-4x = 7$

$17x = 7$

To get x, we will divide both sides by 17. We will get,

$\frac{17x}{17} = \frac{7}{17}$

$x = \frac{7}{17}$

So the smaller number = $\frac{7}{17}$

The larger number = $7(\frac{7}{17} )$ = $\frac{49}{17}$

So we have got the required numbers.

Smaller number = $\frac{7}{17}$ and larger number = $\frac{49}{17}$ .

4 0

3 years ago

What is the answer to 1/8(8x+15)=24

Korvikt [17]

Answer:

x = 177/8

Step-by-step explanation:

First, we must get rid of the fraction by multiplying 8 by both sides.

8 · 1/8(8x + 15) = 24 · 8

1(8x + 15) = 192

8x + 15 = 192

Then we simplify. First subtract 15 from both sides.

8x + 15 - 15 = 192 - 15

8x = 177

Then divide 8 from both sides.

8x/8 = 177/8

x = 177/8

4 0

3 years ago

What is the product of (x-2)(x+2)?

Ilya [14]

Answer:

The difference of squares is (a - b)(a + b) = a² - b². Since a = x and b = 2, the answer is x² - 4.

6 0

3 years ago

Read 2 more answers

In the following. Diagram line is parallel to line be find the measure of angle X

Mrac [35]

Isjwkddjkwhdjxjwkhsidhwjhaosjshwuwjw

7 0

2 years ago