Simplify each expression/2 quotients and show all steps

Question

12.3^8/3^6

16.5s^-7/10s^-9

19.10m^6n^3/5m^2n^7

Write the answer to 24 and 25 in scientific notation

24. 5.2x10^13/1.3x10^7

25. 3.6x10^-10/9x10^-6

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46. (6n^2/3n)^-3

47. (b^4/5/b^7)^-5

Answer 1

12.3^8 = 3^8(4.1)^8, but 12 is the problem number? not part of the problem?

so 3^8/3^6 = 3^(8-6) = 3^2 = 9

3^8/3^6 = 3^2 = 9

12.3^8/3^6 = 9(4.1)^8 = about 7.2 x 10^5

16 5s^-7/10s^-9 = s^(-7+9)/2 =s^2/2

19 5(m/n)^4

24 4x^6

25 (3.6/9)10^4 = 0.6(10)^4 = 6(10^3) = 6000

46 (2n)^-3 = 1/8n^3

47 (b^4/5/b^7)^-5 = (b^-31/5)^-5 = b^31