How do you round 45 to the nearest 10

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm