Two standard number cubes are thrown, one after the other. what is the probability that the first cube lands showing a 1 and the second cube lands showing a number that is not 1? round the answer to the nearest thousandth.

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

The sum of two numbers is 86, and their difference is 20. find the two numbers

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way