An app for your cell phone cost 4.99 but it is discounted 55% off on your birthday if tax is still charged at a rate of 1% what would be the final cost of the app?

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

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.

Among the most famous of all meteor showers are the perseids, which occur each year in early august. in some areas the frequency of visible perseids can be as high as 40 per hour. given that such sightings are poisson events, calculate the probability that an observer who has just seen a meteor will have to wait at least five minutes before seeing another.