Question

Population Estimates Country Number of People P 5.4 x 10 0 6.0 x 10° R 3.0 x 10 Part A What number, written in scientific notation, represents the combined total population of countries P and Q? Show your work or explain your answer.

Answer 1

Given :

`\begin{gathered} P=5.4\cdot10^8 \\ Q=6.0\cdot10^8 \\ R=3.0\cdot10^5 \end{gathered}`

the combined total population of countries P and Q will be :

`\begin{gathered} P+Q=5.4\cdot10^8+6\cdot10^8 \\ P+Q=(5.4+6)\cdot10^8 \\ P+Q=11.4\cdot10^8 \\ \\ P+Q=1.14\cdot10^9 \end{gathered}`

So, the answer will be = 1.14 x 10^9