Find the interval of convergence of the power series. (be sure to include a check for convergence at the endpoints of the interval. if the interval of convergence is an interval, enter your answer using interval notation. if the interval of convergence is a finite set, enter your answer using set notation.) ∞(−1)n + 1(n + 4)xnn = 0

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

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.

3/4 = c/36 i need with this fraction proble.