1. Two Submarines starting from the same point cruise for two hours, one
traveling 30 mph and the other 40 mph. If their courses diverge by
40°, how far apart are they at the end of two hours?

For each proportion find the unknown number x 1/5/8=×/15

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Plz.yesterday, the snow was 2 feet deep in front of archie’s house. today, the snow depth dropped to 1.6 feet because the day is so warm. what is the percent change in the depth of the snow?