Which expression is correctly written in scientific notation? A. 398 x 10^1 B. 39.8 x 10^2 C. 3.98 x 10^4 D. .398 x 10^3 Need answer ASAP

Question

asked Apr 26, 2021 171k views

2 Answers

Zahra Badri · Answer 1 · 2021-05-03T08:08:26+0000

Answer:

C. 3.98 x 10^4

Explanation:

We are only allowed one non zero digit before the decimal

A. 398 x 10^1 3 non zero digits

B. 39.8 x 10^2 2 non zero digits

C. 3.98 x 10^4 1 non zero digit

D. .398 x 10^3 0 non zero digits