Answer all questions I'll give 50 pts.

14. 6 × 10^7

15. 6 × 10^14

16. 7.2 × 10^-7

17. 8.5 × 10^-2

18. 23 × 10^5, 6.9 × 10^6, 72 × 10^5

19. 1.89 × 10^-4, 2.5 × 10^-4, 19 × 10^-3

20. 3.125 × 10^-5

21. 3.1536 × 10^9

Step-by-step explanation:

14.

(2 × 10^5)(3 × 10^2)(200000)(3 × 10^2)(200000)(300)600000006 × 10^7  

15.

(1.5 × 10^5)(4 × 10^9)(150000)(4 × 10^9)(150000)(4000000000)6e + 146 × 10^14

16.

(6 × 10^-4)(1.2 × 10^-3)(0.0006)(1.2 × 10^-3)(0.0006)(0.0012)7.2e-77.2 × 10^-7

17.

(5 × 10^3)(1.7 × 10^-5)(5000)(1.7 × 10^-5)(5000)(0.000017)0.0858.5 × 10^-2

18.

72 × 10^5 = 72000006.9 × 10^6 = 690000023 × 10^5 = 2300000  23 × 10^5, 6.9 × 10^6, 72 × 10^5

19.

19 ×  10^-3 = 0.0192.5 ×  10^-4 = 0.000251.89 × 10^-4 = 0.000189 1.89 × 10^-4, 2.5 × 10^-4, 19 × 10^-3

I’m answering so the other can get brainlist:))) and the answers r on top btw