<span>3x2(7x2 − 9)
Multiply 3x^2 by 7x^2 and -9(Use distributive property)
Final Answer: D.) 21x^4 - 27x^2</span>
Answer:
I'm pretty sure it's 127°
Answer:
65.7
Step-by-step explanation:
Give hears please for how good the answer was
The equation of circle with the center at (h,k) is:

r stands for radius. Therefore r^2 = diameter or 2×radius.
The question has already given the information we need, which are:
- radius = 4
- the center at (0,8)
Since the center is (h,k) - therefore the center is at h = 0 and k = 8 making it (h,k) = (0,8).
Substitute the values in the equation:

Simplify to the simplest form

Answer
- The equation of a circle is x^2+(y-8)^2 = 16