A circle has its center at the origin and has a diameter of 24 units.
What is the standard equation of the circle?
A. x2 + y2 = 242
B. x2 + y2 = 122
C. x2 - y2 = 24
D. x2 - y2 = 122

i think asking google will you get the answer to that question

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh

3/8

4y - 6 + y^2 - 9 = y^2 + 4y - 15

y^2 term

terms

- terms

total of 3 terms when simplified

step-by-step explanation: