You estimate that there are 41 marbles in a jar. The actual amount is 71 marbles. Find the percent error. Round to the nearest tenth of a percent if necessary.

Find the next three terms in the sequence 80 - 160 320 - 640

Amy's age plus Betty's age is 29 years. Amy's plus Carl's age is 27 years. Betty's plus Carl's age is 22 years. What is the difference between the oldest child and the youngest child is?

What are the 7 hardest math problems?

The length of a rectangular room is 5 feet more than three times the width. the perimeter of the room is 66 feet. find the dimensions of the room.

What is the elapsed time between 11:50 a. m. and 4:05 p. m.? 4 hours and 45 minutes 15 hours and 15 minutes 5 hours and 15 minutes 4 hours and 15 minutes

Lanika needs a sheet of card that is at least 3/10 mm thick. At home she finds some card but she doesn't know how thick it is.

The doctor order 100mg of Rocephin. Available is 1g/1mL. How many mL is to be administered?

Mr. Theorem writes the expressions Six to the second power divided by 2m on the board. what is the value of this expression when the value of m=3

Keilah has a large pizza. The radius of the pizza is 12 inches, and the pizza is cut into 16 slices. How many radians of the pizza are taken if four slices were eaten? What is the degree measure of the four slices taken? Explain your steps.

Eight of 50 video recorders in an inventory are known to be defective. what is the probability you randomly select an item that is not defective?