Nadia flips a fair quarter twice. what is the probability that the coin will land on heads both times

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

What’s the answer ? use the picture to see the problem

You use technology ans find a sum of 6.712e-8. write this sum in standard form