Question

Pls, help!! 50 points

Answer 1

7.112×10^7

Explanation:

`6.9 * 10 {}^(7) + 2.12 * {10}^(6) \\ 69 * {10}^(6) + 2.12 * {10}^(6) \\ 71.12 * {10}^(6) \\ 7.112 * {10}^(7)`

Answer 2

Answer: Shown below

Explanation:

10^n will always have n zeros leading after the 1. Cool trick.

(69000000)+(2120000)

71120000

our answer is 71120000, or
`7.112 * 10^(7)`