Question

Evaluate and write your answer in scientific notation. Round your answer to the nearest tenth. 5.7 x 10^4 x 2 * 10^3

Answer 1

In multipiying scientific notations, we use this formula:

$(Ax10^x)(Bx10^y)=(AB)x10^{x\text{ + y}}$

Given the scientific notations:

$(5.7x10^4)(2x10^3)$

We get,

$(5.7x10^4)(2x10^3)=(5.7x2)x10^{4\text{ + 3}}$$=11.4x10^7$

Therefore, (5.7 x 10^4) x (2 x 10^3) = 11.4 x 10^7