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A rectangle and a square have the same area. The length of the rectangle is seventy feet more than two times its width. The length of a side of the square is thirty feet. Which of the following equations would help you solve for the dimensions of the rectangle?

A) 30^2 = x(2x + 70)
B) 30x^2 = 2x + 70
C) 302 = 70x * w mph
D) 30 + 30 = 70 + x * 2 mph
E) 30 * 2 = 70x^2
F) 100 = x^2 + x

Respuesta :

The area of the square = 30^2  ft^2

area of the rectangle = x * (2x + 70) ft^2 (where x = the width)  and these areas are equal. Therefore:-

30^2 = x(2x + 70)

Its A

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