Let a, b, c, and d be distinct real numbers such that a = sqrt(4 + sqrt(5 + a)), b = sqrt(4 - sqrt(5 + b)), c = sqrt(4 + sqrt(5 - c)), d = sqrt(4 - sqrt{5 - d)). Compute abcd.

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

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

Hello, i need compare km^2 and km. what's difference in this?