Question

1. the population of china is about 1.4 x 10^9 people, while the population of south korea is approximately 50,000,000 people. how many times greater is the population of china than the population of south korea? scientific: _ standard: _

Explanation:

Step1: Write South - Korea's population in scientific notation

$50000000 = 5\times10^{7}$

Step2: Calculate the ratio

$\frac{1.4\times 10^{9}}{5\times 10^{7}}=\frac{1.4}{5}\times10^{9 - 7}$
$0.28\times10^{2}=2.8\times 10^{1}$
In standard form, $2.8\times 10^{1}=28$

Answer:

Scientific: $2.8\times 10^{1}$
Standard: $28$