Resuelve las siguientes ecuaciones a: )=26 b: 15-y= -27 c: 34+n=54 d: 4x-7= -24 e: 945/x= -15 f: 34-n= -16 g: -28 -y =26 h: 4x -n: -3 i: m/-6=25 j: x/12= -15

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?