Si pintar un techo que mida 9 pies por 15 pies tiene un costo de $60, ¿cuánto más costará pintar un techo que mida 18 pies por 30 pies?

answer: i believe it’s 245.04

step-by-step explanation:

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

597

step-by-step explanation: