Answered

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A rectangle has a length of 3x-5 and a width of 2x+9.

a. Write an expression for the perimeter of the rectangle.

b. Write an expression for the area of the rectangle.

Sagot :

reinhard10158

Step-by-step explanation:

l = 3x - 5

w = 2x + 9

perimeter = 2l + 2w = 2(3x - 5) + 2(2x + 9) =

= 6x - 10 + 4x + 18 = 10x + 8

area = l×w = (3x - 5)(2x + 9) = 6x² + 27x - 10x - 45 =

= 6x² + 17x - 45

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