What is the center of the circle x2 + y2 - 49 = 0?
simplify any fractions.

the origin (0, 0)

Step-by-step explanation:

The equation of a circle centred at the origin has the form

x² + y² = r² ← r is the radius of the circle

Given

x² + y² - 49 = 0 ( add 49 to both sides )

x² + y² = 49 ← in standard form

with centre (0, 0 ) and r = 7

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above