A biologist estimated that the current population of ladybugs in the region was 8.3 × 106. He predicts that a swarm of 950,000 ladybugs will be arriving into the region.

Question

According to the biologist's estimates, how many ladybugs will be in the region after the swarm arrives?

A.
9.25 × 10^7
B.
1.78 × 10^7
C.
9.25 × 10^6
D.
1.78 × 10^6

Answer 1

To find the total population of ladybugs after the swarm arrives, you need to add the current population to the number of ladybugs in the swarm.

Current population: 8.3 × 10^6
Swarm population: 950,000

To add these two values, you need to convert the swarm population to scientific notation:

950,000 = 9.5 × 10^5

Now, you can add the current population to the swarm population:

8.3 × 10^6 + 9.5 × 10^5 = (8.3 + 0.95) × 10^6 = 9.25 × 10^6

So, the total population of ladybugs in the region after the swarm arrives will be 9.25 × 10^6.

The correct answer is C. 9.25 × 10^6.