Question

Quadrilateral ABCD below is a parallelogram. Use the figure to select the best answer from the choices provided. If AD = 3x + 5, AB = 7x – 3, and BC = 8x – 10, what is the value of x? Select the best answer from the choices provided. A. 2 B. 3 C. 7 D. 8

Answer 1

Answer: 3

Explanation:

Opposite sides of a parallelogram are congruent, so AD=BC.

`3x+5=8x-10\\5=5x-1015=5x\\x=\boxed{3}`