Answer:
b. complementary
Step-by-step explanation:
-Complementary angles are angles that add up to 90°.
-These are usually the two acute angles in the right triangle.
#To verify, lets take the two angles 30° and 60°:

#We can reverse as:

Hence, two angles are said to be complimentary if they sum up to 90°.
Answer:

Step-by-step explanation:

<u>Apply exponent rule : </u>
<u>Add 11 +2 = 13</u>
- <u />

<u>-----------------------</u>
<u>OAmalOHopeO</u>
<u>-----------------------</u>
The phrase would be: "z divided by the difference of 8 and 9"
Answer: 20%.
Step-by-step explanation:
Given, The price of a shirt is marked down from $12.50 to $10.00.
Previous price = $12.50
New price = $10.00
Change in price = Previous price - New price
= $12.50 - $10.00
= $2.50
Now, the percent decrease of the shirt = 

Hence, the percent decrease of the shirt = 20%.