The weight of a rock sample is measured to be 3.1 pounds. What is the percent of error in the measurement?

Harry and Jack raised roses and petunias in their garden. If 15 percent of the flowers were roses and there were 120 roses, how many flowers were there in all?

A water tank holds 18000 gallons. How long will it take for the water level to reach 6000 gallons if the water is used at anaverage rate of 450 gallons per day

Find 65% of 654 thx

Estimate the quotients using compatibale numbers. 8631:10

There are 7 times as many females as males on the maths course at university. What fraction of the course are female? Give your answer in its simplest form.

The O'Malley family is driving cross-country to see their cousins. So far, they have traveled 275 miles. This is 1/5 of the way to their cousins' house. How far do the O'Malleys live from their cousins?

a sun in a distance galaxy has an estimated mass of 1.61244 * 10 ^32 kg and the earth has a mass of 5.972 * 10^24 kg, how many earths would it take to equal the mass of the sun?

Why did the ant run across the cracker box

the expression 6x + 15 represents the total cost of a bicycle rental. when danny rents a bike for 2 hours, the total cost of his rental is $27. What does the coefficient 6 represent?

Bonnie uses of a cup of sugar in each cupcake. If she is making 9 cupcakes, how much sugar will Bonnie need?