The purple shape is a dilation of the black shape. What is the scale factor of the dilation?

What is the smallest integer n such that n\sqrt{2} is greater than 20

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

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did