Which of the following equations correctly represents a circle centered at the origin with a radius of 7? a. (x - 7)2 + y2 = 49 b. x2 + y2 = 72 c. x2 + y2 = 7 d. (x - 7)2 + (y - 7)2 = 72

Option B.

Step-by-step explanation:

we know that

The equation of a circle into center radius form is equal to

where

(h,k) is the center

r is the radius

In this problem we have

-----> because the center is at the origin

substitute

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

answer: 193

explanation:

200-7 = 193