Question

In scientific notation, 0.00074m can be written as 1- 0.74×10‐³m 2- 7.4×10-⁴m 3- 74×10‐⁵m 4- 740×10‐⁶m

Answer 1

Answer:

$0.00074m$ $=$ $7.4*10^{-4}m$

Explanation:

Given

$0.00074m$

Required

Express as scientific notation

The scientific notation of a number is: $a * 10^{b}$

Where $1 \le a \le 9$

This implies that:

$0.00074m = 7.4 * 10^b$

Next, is to determine the value of b.

Count the number of point to move from the current point location to 7.4.

If the point moves backward, b will be negative, else b will be positive.

So:

$0.00074m$      $b=-4$

Hence:

$0.00074m$ $=$ $7.4*10^{-4}m$