Question

What is the difference? Brainlist to whoever helps!

Answer 1

The difference between numbers is calculated by subtracting them.

The difference is: $\mathbf{(b)\ 3.218 \times 10^{-4}}$

Let the numbers be x and y

So, we have:

$\mathbf{x = 7.63 \times 10^{-5}}$

$\mathbf{y = 3.981 \times 10^{-4}}$

The difference is calculated as follows:

$\mathbf{y - x = 3.981 \times 10^{-4} - 7.63 \times 10^{-5}}$

Factor out 1/10

$\mathbf{y - x = 3.981 \times 10^{-4} - 7.63 \times 10^{-4} \times 10^{-1}}$

Factor out 10^-4

$\mathbf{y - x = 10^{-4} \times ( 3.981 - 7.63 \times 10^{-1})}$

$\mathbf{y - x = 10^{-4} \times ( 3.981 - 0.763)}$

Subtract

$\mathbf{y - x = 10^{-4} \times ( 3.218)}$

Evaluate the product

$\mathbf{y - x = 3.218 \times 10^{-4}}$

Hence, the difference is: $\mathbf{(b)\ 3.218 \times 10^{-4}}$

Read more about subtractions at

brainly.com/question/17781221