Question

tuesday: the population of city a is 3.4 × 10⁸ people, and the population of city b is 2.8 × 10⁸ people. what is the total population of the two cities? a) 6.2 × 10⁸ b) 6.2 × 10⁷ c) 0.62 × 10⁸ d) 62 × 10⁸

Explanation:

Step1: Identify given populations

Population of City A: $3.4 \times 10^6$; Population of City B: $2.8 \times 10^6$

Step2: Add the two values

Since both have the same power of 10, add the coefficients:
$3.4 + 2.8 = 6.2$
Retain the common power of 10: $10^6$
Total population: $6.2 \times 10^6$

Step3: Match with options

Compare the result to the provided choices.

Answer:

A) $6.2 \times 10^6$