Which of the following are identities? check all that apply. a. cot2x + 1 = csc2x b. tan2x = 1 - sec2x c. sin2x = 1 + cos2x d. sin2x + cos2x = 1

What kind of bond pays interest which is exempt from tax?

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is