Answer:
B= 2y(3)/7x(8)
C= 12/ x(3) y(3)
D= The same because nothing else can be done with it
(parnthaces) are exponents
The general form for a parabolic dish is:
y=x^2/(4f), where f=focus' y coordinate when x=0
So if you are given the equation:
8y=x^2, you need only to rearrange it to the form y=x^2/(4f)
y=x^2/8
Since 8=4f, f=2 inches and the focal point of course (0,2)
Answer:

Step-by-step explanation:

Answer:
60 square units
Step-by-step explanation:
Solution:
If the <u>numerator</u> and the <u>denominator</u> have like bases in exponents, then the <u>exponents</u> subtract.
- =>

Thus, 7b is the simplified expression.