evaluate the expressions. write your answer in scientific notation.

Question

3.6x10⁶/1.2x10⁵        (2.6x10-7)(5.3x10⁶) (   (2x10⁴)^-2

Answer 1

1. 3.6x10⁶/1.2x10⁵    = 3.0 x 10¹ = 30

 

2. (2.6x10^-7)(5.3x10⁶) (   (2x10⁴)^-2)

 

Part 1,  (2.6x10^-7)(5.3x10⁶) = 1.378 x 10¹ = 13.78

Part 2, (2x10⁴)^-2 = 2 x 10² = 200

 

Part 3 13.78 x 200 = 2,756 = 2.756 x 10³