Jamal scored 62, 75, 76 and 90 on four tests. What does he need to score on the fifth test to have a MEAN of exactly 80? A.80
B.100
C.93
D.97

Hello i need some with trigonometric substitutions. [tex]\int\limits^a_b {x} \, dx[/tex]

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?