Answer:
4.) Step 2; it should be m∠o + m∠p = 180 degrees (supplementary angles)
Step-by-step explanation:
o and p are supplementary angles, and therefore add up to 180 degrees.
For this case we must simplify the following expression:

So, solving the first parentheses we have:

We have to:

We add similar terms taking into account that different signs are subtracted and the sign of the major is placed:

Finally, the simplified expression is: 
ANswer:

<span>94 is 117.5% of 80 is your answer</span>
B. Is the correct answer. A circle can not form a perpendicular bisector as it is rounded and not straight.
C. p-125
The original price minus the sale