Which of the following is an equivalent rate to running 5.4 miles in 43.2 minutes?

What is the size of the matrix resulting from

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ac=26 and ch=8, find bh.

Sally deposited money into a savings account paying 4% simple interest per year.the first year,she earn $75 in interest.how much interest will she earn during the following year?