jamil always throws loose change into a pencil holder on his desk and takes it out every two weeks. this time it is all nickels and dimes. there are 8 times as many dimes as nickels, and the value of the dimes is $8.25 more than the value of the nickels. how many nickels and dimes does jamil have?

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

What is the distance between point a and b