carsyn2016
24.06.2019 •
Mathematics
If abcd is an isosceles trapezoid, what is the value of x
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Ответ:
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.
Ответ:
3 3/4
Step-by-step explanation: