How many of the first 200 positive integers are multiples of neither 6 nor 15

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

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.

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)