Find the radius and the center (x+3)2 + (y+8)2 = 81

This means the center is (-3,-8) and the radius is 9

Step-by-step explanation:

(x+3)^2 + (y+8)^2 = 81

The equation of a circle can be written as

(x-h)^2 + (y-k)^2 = r^2  where the center is (h,k) and the radius is r

We can rewrite the above equation as

(x- -3)^2 + (y - -8)^2 = 9^2

This means the center is (-3,-8) and the radius is 9

1. 3.4/4

2. 0.8/7

3. 0.5 x 3

4. 0.9 x 6

5. 10.8

6. 2.35

7. 0.567

8. 9.35

9. 0.02

10. 0.06

11. 0.16

12. 0.42

13. 0.63

14. 5.6

15. 8.1

16. 9.9

17. 0.28

18. 0.48

19. 0.27

20. 0.49

21. 0.45

22. 0.72

23. 0.9

24. 0.88

25. 0.75

26. 0.16

27. 0.328

28. 0.495

29. 0.72

30. 1.068

this is false ^.^ lol