A radio telescope has a parabolic surface as shown below. If the telescope is 1 m deep and 20 m wide, how far is the focus from the vertex?

What is the area of triangle abc if a = 8, b = 11, and c = 15?

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

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries