You friend billy needs you to look over his work. write yes or no and show what he did wrong and the right steps to
solve and get the right answer
1- -4 7/8 × 2/3 =
billy's work. -4 14/24 = -4 7/12

2- -3 1/5 ÷ 2/3 =
billys work. -3 1/5 ÷ -2/3 = -16×-3/2 = -8/5×-3/1 = -24/5 = -4 4/5

$32,660

step-by-step explanation:

i dont know men

step-by-step explanation:

idk lol xd

step-by-step explanation:

ez do it yourself lazy

(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