Question

Write the following value in scientific notation.
0.00000021

Answer 1

answer i got 2.1 x 10^5

Answer 2

2.1 * 10^-7

Answer 3

why is it negative..?

Answer 4

Because the value is less than one.

Answer 5

A negative exponent is basically a reciprocal, so it's the value of
\[\frac{1}{2.1 * 10^7}\]

Answer 6

oh