A straight connection is required to join two nearby sewers. The head engineer determined that, by using newer 18-meter sections of pipe, the job can be completed using exactly 8 fewer sections than if older 12- meter sections of pipe were used. How long is the connection under consideration

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answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

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

you,

mrb

their is no graph showing

step-by-step explanation:

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.