Question

Divide and express the product in scientific notation. fill in missing number

4.2x10 ^-12 divided by
5.6x10^6
=7.5x10^?

Answer 1

`\frac{4.2 * {10}^( - 12) }{5.6 * {10}^(6) } \\ 7.5 * {10}^( - 19)`

Answer 2

The missing number is -19

Explanation:

`(4.2*10^(-12) )/(5.6*10^(6) ) = (420*10^(-14) )/(56*10^(5) )= (420 )/(56 )*(10^(-14))/(10^5) =(420)/(56)*10^(-19) } = 7.5*10^(-19)`