MATH SOLVE

3 months ago

Q:
# Please Help Keep getting 6.4

Accepted Solution

A:

Answer:r = 3Step-by-step explanation:x^2 + 6x + y^2 - 8y = - 16Take half the linear term and square it.x^2 + 6x + (3)^2 + y^2 - 8y + (-4)^2 = - 16 Add the squared amounts to the right.x^2 + 6x + 9 + y^2 - 8y + 16 = - 16 + 9 + 16 Combine on the right. x^2 + 6x + 9 + y^2 - 8y + 16 = 9Represent the 2 quadratics as perfect squares.(x + 3)^2 + y - 4)^2 = 9The radius is the square root of 9 which is 3