Calculate the simple interest corrected by a bank if $7650 is loaned for 4 years at 6.5 per annum

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90