Find the values of X and Y in the parallelogram.

Mathematics

1 answer:

galben [10]2 years ago

6 0

Answer: x=-5, y=20

Step-by-step explanation:

Opposite sides of a parallelogram are congruent, so AB=CD.

$x^{2}-15=-2x\\x^{2}+2x-15=0\\(x+5)(x-3)=0\\x=-5, 3$

But as distance must be positive, as CD=-2x, x must be negative, so x=-5.

Opposite angles of a parallelogram are congruent, so $m\angle D=m\angle B$ .

$4y+26=106\\4y=80\\y=20$

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