Answer:
8
Step-by-step explanation:
mystery number= x
he divdes x by 2 and then subtracts 9 and gets -5. reverse the order to find x.
-5+9 which is 4 times 2 which is 8. x is 8
Answer:
10. 0.7
11. 0.13
12. 0.25
13. 0.5625
14. 0.53
15. 0.416
16. 0.916
17. 0.09
18. 8.5
19. 10.9
20. 15.1875
21. 4.45
22. 8.85
23. 6.25
24. 9.45
25. 12.5
26. 0.007
27. 0.025
28. 9.0008
29. 12.0032
30. Decimal form: 3.4 Exact form: 17/5
31. Idk i'm sorry
32. 2401
Hope all this helps :)
Step-by-step explanation:
Answer:
radius = 12.3 cm
Step-by-step explanation:
The formula to find the circumference of a circle:
Circumference = 2 × π × r
77 = 2 × π × r
r =
r = 12.3 cm (in 3 significant figures)