a swarm of mosquitoes may contain as many as 70 million mosquitoes per square mile. how many mosquitoes are there in a 1500 miles swarm?

Total number of miles of land = 1500 miles square.

Number of mosquitoes in a swarm in a mile square of land = 70 millions mosquitoes.

We need to find the number of mosquitoes are there in a 1500 miles swarm.

In order to find the number of number of mosquitoes are there in a 1500 miles swarm, we need to multiply 1500 by 70 millions.

Therefore,

Number of mosquitoes are there in a 1500 miles swarm = 1500 * 70

= 105000 millions.

1 million = 10^6.

105000 millions = 105000 * 10^6 = 1.05 * 10^11 mosquitoes.

So, the final answer is 1.05 * 10^11 mosquitoes in 1500 miles square land.