Please help
what is the formula of calculating variance??

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

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

You buy a veido game for $60 and the sales tax is 8% what is the total cost for the game including the sales tax