Consecutive angles of a parallelogram are supplementary, so:

This means
and that
.
Since opposite angles of a parallelogram are congruent,

Answer:
we dont have paper
Step-by-step explanation:
Then Mary should get a job
The correct answer is 1.7 times 10^3.
Answer:
The answer is D
x = 4
y = -2
z = 3
Step-by-step explanation:
Plug in the values of x and z into the first equation, and see that D is the only choice that is correct.