Question

The population of a country in 1950 was


`6.2 * {10}^(7)`
. The population in 2030 is projected to be

`3 * {10}^(2)`
Times the 1950 population.If the projection is correct, what will the population of the country be in 2030?​

Answer 1

`1.86*10^(10)`

Explanation:

We need to multiply the 1950 population by the number given (3*10^2)

So, we have
`(6.2*10^7)*(3*10^2)`

we will multiply the constants in front and add the exponents of 10 together and write:

`(6.2*10^7)*(3*10^2)\\=(6.2*3)*10^(7+2)\\=18.6*10^9`

This in standard form is 1.86 * 10 ^ 10