Question

The population of China is approximately 1.381 × 109, and the population of the United States is approximately 3.23 × 108.
About how many people live in both countries combined? Express your answer in scientific notation.

Answer 1

Step-by-step explanation:

The population of China is approximately 1.381 × 109, and the population of the United States is approximately 3.23 × 108.

About how many people live in both countries combined? Express your answer in scientific notation.

Answer 2

Answer:

$4.99369 \times 10^2$

Step-by-step explanation:

$\pink{\huge{\dagger}}\bold{\underline{Given:-}}$

❒ Population of china = 1.381 × 109

❒ Population of United states = 3.23 × 108

$\pink{\huge{\dagger}}\bold{\underline{To\:Find:-}}$

How many people live in both countries combined?

Express your answer in scientific notation?

$\pink{\huge{\dagger}}\bold{\underline{Solution:-}}$

Population of china =  1.381 × 109 = 150.529

Population of United states = 3.23 × 108 = 348.84

Number of people live in both countries combined =

$\hookrightarrow 150.529 +348.84$

$\hookrightarrow 499.369$

☞ $\bold{We\:should\:express\:499.369\:into\:scientific\:notation}$

$\hookrightarrow 4.99369 \times 10^2$

$\orange{:\longmapsto}\red{\boxed{4.99369\times 10^2}}$

∴Number of people in both the countries combined = $4.99369\times10^2$