Answer:
see below
Step-by-step explanation:
The definition of a parallelogram is that opposite sides of the quadrilateral are parallel. Felice already knows one pair of opposite sides is parallel. By showing the slope of RQ is the same as the slope of ST, she can show the other pair of opposite sides is parallel, hence the figure is a parallelogram.
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The other answer choices are essentially nonsense.
Your answer would be 20.. the square root of 50 is 7.07106781187 x by 8
3c + b.....when c = -7 and b = 4
3(-7) + 4 =
-21 + 4 =
- 17 <===
It depends how you name the sides of triangle.
Look at picture at the result.

PS. Sorry for my terrible drawing but I did it as fast as possible :)
Answer:
0.8
Step-by-step explanation:
cos z = 8/10 = 0.8