Question

Country A has a population of about 7,200,000. Which expression is equivalent to 7,200,000?

A) 720 x 10^6
B) 72 x 10^4
C) 7.2 x 10^6
D) 7.2 x 10^5
How many times larger is Country A's population than Country B's population?

A) 200
B) 20
C) 2
D) 0.2

Answer 1

The expression equivalent to 7,200,000 is 7.2 x 10^6. The correct answer is C) 7.2 x 10^6. The comparison of population sizes between Country A and Country B cannot be determined without specific populations.

Step-by-step explanation:

The expression equivalent to 7,200,000 is 7.2 x 10^6. This can be found by moving the decimal point six places to the left, resulting in the number 7.2. Since the decimal point was moved left, we use a positive exponent of 6 to indicate that the number is multiplied by 10 six times. Therefore, the correct answer is C) 7.2 x 10^6.

To calculate how many times larger Country A's population is compared to Country B's population, we simply divide Country A's population by Country B's population. Without the specific populations of both countries, we cannot determine the exact answer.