Question

Answer all questions I'll give 50 pts.

Answer 1

Answer:

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)
• 60000000
• 6 × 10^7  

15.

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

• 6 × 10^14

16.

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

17.

• (5 × 10^3)(1.7 × 10^-5)
• (5000)(1.7 × 10^-5)
• (5000)(0.000017)
• 0.085
• 8.5 × 10^-2

18.

• 72 × 10^5 = 7200000
• 6.9 × 10^6 = 6900000

• 23 × 10^5 = 2300000  
• 23 × 10^5, 6.9 × 10^6, 72 × 10^5

19.

• 19 ×  10^-3 = 0.019
• 2.5 ×  10^-4 = 0.00025
• 1.89 × 10^-4 = 0.000189

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

Answer 2

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