Formula used: cos(x) = 
Hope this helped!
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Answer: A. -6
Step-by-step explanation:
Answer:
x = 24 , y = 19
Step-by-step explanation:
The opposite sides of a parallelogram are congruent , then
2x - 8 = x + 16 ( subtract x from both sides )
x - 8 = 16 ( add 8 to both sides )
x = 24
and
2y = y + 19 ( subtract y from both sides )
y = 19
I think the answer is B because to prove that a parallelogram is a parallelogram is well.. if the sides are parallel
hope this helps!
