An 80-foot rope from the top of a tree house to the ground forms a 45° angle of elevation from the ground. How high is the top of the tree
house? Round your answer to the nearest tenth of a foot.
feet

What are the sotions to the quadratic equation 9x^2=4

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?