Answer:
-4
Step-by-step explanation:
(-2)^2=4 because a negative number squared is always positive
-(2)^2=-4
z = 2y
Step-by-step explanation:
..... (given)
... (exterior alternate angles)
Answer:
y=20x
Step-by-step explanation:
Since y represents the total cost y is the total. 20x because it is 20 dollars an hour and x after 20 because we do not know how many hours they will plan for lessons.
Here is my answer. In this problem, you need to use the similarity of triangles. I hope this is helpful.
