A jar contains n nickels and d dimes. There are 30 coins in the jar, and the total value of the coins is $2.20. How many nickels and how many dimes are in the jar?

There is a toy box in the form of a cube with side lengths of 6 inches. Inside the box is a ball with a radius of 3 inches. How much free space is remaining in the toy box with the ball inside?

If y=x^2+kx-k, for what values of k will the quadratic have two real solutions

Find the mean of the data set (102, 105, 103, 104, 106, 103, 101). Round to the nearest tenth.

What is the greatest common factors of 20,40,50 and 120

The price of a cup of coffee was $2.65 yesterday. today, the price fell to $2.50. find the percentage decrease. round your answer to the nearest tenth of a percent.

cala uses 2 pounds of feed - all fertilizer for a 100-foot row of vegetables at her farm. At this rate, how many pounds of fertilzer would she use for a 450-foot row of vegetables

5 ones 13 tens 4 hundreds what is this in standard form

Alan is paying a dinner check but he was not sure how much he should tip for his bill of $27 and thirty-eight. if a standard tip is a 15% tip is standard about how much should I leave for the server

P + 13x = q p = 7 x = 4 q =

A horse ran 800 meters in 40 seconds, 1,200 meters in 60 seconds, and 480 meters in 24 seconds. Is this a proportional relationship? If so, what is the constant of proportionality? What does it represent.