3 years ago

In quadrilateral ABCD, AE=x+6 and BE=3x-18 For what value of x is ABCD a rectangle?

1 answer:

3 0

x + 6 = 3x - 18
- x       - x
   6 = 2x - 18
+ 18     + 18
   24 = 2x
      2 2
   12 = x

The answer is C.

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