The circle below is centered at the origin and has a radius of 4. What is its
2 answers:
Answer:
Step-by-step explanation:
The standard form of a circle's equation is
where h and k are the circle's center and r is the radius. We are told, and we can see, that the center of the circle is (0, 0) so h = 0 and k = 0. The radius, given as 4, goes into the equation squared, so the equation is
which simplifies down to
, choice C.
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Answer:
and
Step-by-step explanation:
We have the following system of equations:
and
To solve the problem, we need to equal the two equations:
⇒
⇒
⇒
So you need to find two numbers that added equal to 5 and multiplied equal to 4. These two numbers are and
.
Then, the factorized form of the polynomial is: .
The, the solution to the system of equations is: and
.