Answer:
They are complementary angles.
Step-by-step explanation:
The sum of their measurements equals 90 degrees.
Answer: To find a residual you must take the predicted value and subtract it from the measured value.
Step-by-step explanation:
Answer:
87
Step-by-step explanation:
Look at it upside down!
Answer:
c
Step-by-step explanation:


add -x to both sides

multiply both sides by -1/2


the equations don't have the same slope so they aren't parallel
The solpes product doesn't equal -1 so they aren't perpendicular