At a college, 51 students were part of the choir or the marching band, 33 were members of the choir, and 9 were members of the choir and marching band. How many students were members only of the marching band? Appreciate the help

A) if $50000 is invested in a bank account that pays 9.3% of interest compounded on a six-monthly basis, how much money will be in the account after 3 and 12 years? b) if matusalen's father had put $2.0 in the bank when he was born and there, how long would matusalen have had to his death (969 years later) if the interest was 7% per year composed each month and weekly?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Sketch one cycle if the cosine function y=2cos2theta