Answer:
Step-by-step explanation:
The "template" equation of a circle is:

All you're doing after that, is filling in the blanks:
h = 0
k = 5
r = 5
Answer:
$44
Step-by-step explanation:
To get 45% of something, first multiply it by 0.45 or 45%:
80x0.45=36
Now subtract that from the original price of $80 to get your answer:
80-36=44
The answer is the sale price is $44
What is the question you are asking?
Answer:
Substitute into the quadratic formula
-6 ± √32 / 2
= -3 ± √16
= 1 and -1 are the answer