Question

If ABCD is an isosceles trapezoid, what is the value of x

Answer 1

Answer:

17 apex

Step-by-step explanation:

Answer 2

Answer:

Since we know that ABCD is an isosceles trapezoid, we can also asume that its diagonals have the same length, which means:

AC = BD

=> 7x - 21 = 5x + 13

=> 7x - 5x = 21 + 13

=> 2x        = 34

=> x           = 34/2 = 17

So the answer is C.