Leeza’s aquarium holds 55 gallons of water. She is filling the tank and has already put in 22 gallons. Which inequality can determine out how many more gallons she might put in the tank?

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?