Name:
class:
a mathematical shopping spree!
congratulations! over the past few months, you have been spending
your evenings as a cell phone sales man. this month you have sold
$2,100 worth of cell phone products, and have earned 12%
commission on your sales. your check is on the way and it is the
perfect timing because you need to get some new school clothes.
you can spend as much or as little of your check on cloths, but there
are a few rules
you cannot spend more money than you have. you have
to spend on you shopping spree.

(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

ome people is not even worth it to even try it in the air.

step-by-step explanation: