Question

If QRST is a parallelogram, what is the value of x?

a. 12
b. 13
c. 11
d. 14

Answer 1

Since diagonals bisect each other, \(\rm 12x - 8 = 14x - 34\).
Solve for \(\rm x\).

Answer 2

Take x for one side..

Answer 3

a?

Answer 4

14x-12x=-8+34
2x =26
Now solve...

Answer 5

c?

Answer 6

No it's not correct. Try again...

Answer 7

Just divide 2x=26 by 2 to get x...

Answer 8

d?

Answer 9

Nope..
\[\frac{2x}{2}=\frac{26}{2}\]\[x=13\]
So it's b.