Question

(5x 10^3) x (9x10^7)

Answer 1

A) 10^10 * 45

B) 3500

Explanation:

Part A

`\left(5\cdot \:10^3\right)\left(9\cdot \:10^7\right)\\=5\cdot \:9\cdot \:10^(3+7)\\=10^(10)\cdot \:45`

Part B

`(7\cdot \:10^5)/(2\cdot \:10^2)\\=(7\cdot \:10^(5-2))/(2)\\=(10^3\cdot \:7)/(2)\\\\=(2^3\cdot \:5^3\cdot \:7)/(2)\\=5^3\cdot \:2^2\cdot \:7\\=2^2\cdot \:125\cdot \:7\\=3500`

Answer 2

4.5 x 10^11

Pretty simple, and Im just typing bc it needs to be 20 characters also use m a t h w a y.