On Monday, a shoe store sold 25 pairs of shoes. On Tuesday they sold 17 pairs of shoes. On Wednesday 8 pairs of shoes were returned to the store. How many pairs of shoes did the shoes store sell without being returned?

34 pairs of shoes.

Step-by-step explanation:

Given:

On Monday,a shoe store sold 25 pairs of shoes.

On Tuesday they sold 17 pairs of shoes.

On Wednesday 8 pairs of shoes were returned to the store.

Question asked:

How many pairs of shoes did the shoes store sell without being returned?

Solution:

Total sell of pairs of shoes by the shoes store =  25 pairs + 17 pairs

                                                                          = 42 pairs of shoes.

Pairs of shoes returned = 8 pairs

Now, actual sell of pair of shoes = Total sell of pairs of shoes - Pairs of shoes returned

Actual sell of pair of shoes = 42 - 8 = 34 Pairs of shoes

Thus, 34 pairs of shoes, the shoes store sold without being returned.

0.6

39mph

step-by-step explanation:

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240