The time between failures for an electrical appliance is exponentially distributed with a mean of 25 months. what is the probability that the next failure will not occur before 30 months have elapsed?

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

Mickey needs to cut pieces of ribbon that are each 1 meter long tie onto balloons. if he has 8 pieces of ribbon that are each 1 dekameter long. how many 1 meter pieces of ribbon can he cut

The distributive property allows you to say that 3(x − 1) = 3x −