Three of the expressions will give the amount that remains after t years of a certain radioactive substance. Which expression is NOT equivalent to the others?

A) 270^−0.0577t
B) 270(1/2^)t/12
C) 270(0.944^)t
D) 270(1/3^)t/9

Shryia read a 481 -page-long book cover to cover in a single session, at a constant rate. after reading for 1.5 hours, she had 403 pages left to read. how fast was shryia reading? pages per hour how long did it take her to read the entire book? hours plz i realy need this

If jaime wants to find 60% of 320, which table should he use?

Si la base de un triángulo isósceles mide 70 m y el ángulo opuesto a ésta mide 58°; entonces ¿cuánto mide la altura de dicho triángulo? a) 21.87 m. b) 40.01 m. c) 43.74 m. d) 63.14 m.