3 years ago

ABCD is a parallelogram. Find the values of x and y. Solve for the value of z, if z=x−y.

Mathematics

1 answer:

slava [35]3 years ago

3 0

Answer:

Step-by-step explanation:

Parallel and opposite sides of a parallelogram are equal. Hence, we can say:

x + 30 = 2x - 10

and

2y-10 = y +10

Solving first one, we get:

x + 30 = 2x - 10

30+10 = x

x = 40

Also

2y - 10 = y + 10

y = 10 + 10

y = 20

Now, z = x - y, so

z = 40 - 20 = 20

Answer C is right.

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