For the past 3 months, grace used her cell phone for 43 min, 62 min, and 57 min. how many minutes would she have to use her cel phone this month for the average usage over the four months to be 55 minuts

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.

What fraction is equivalent to 0.46464646··· a. 46⁄999 b. 46⁄100 c. 46⁄99 d. 23⁄50

Simplify the expression below -3(10x+4y)+6(6x-2y)