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

`0.00074m`
`=`
`7.4*10^(-4)m`

Step-by-step 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`