10+8=2y what is the value of y

A measurement that closely agrees with accepted values

A jar contains 5 green marbles and 9 purple marbles. A marble is drawn and dropped back into the jar. Then a second marble is drawn and dropped back into the jar. Both marbles are green.

If a box has a surface area of 680 and the length and width are 10. What is the height?

Show three different ways to compose a sum if 1. Use two fractions that have 8 as a denominator. Explain your answer.

Two objects were lifted by a machine. One object had a mass of 2 kilograms and was lifted at a speed of 2m/sec. the other had a mass of 4 kilograms and was lifted at a rate of 3m/sec.

Find quotient 7.16/0.56

What is the value of f (x) = (2) (2^x) for f (-2) ?

You have an ice cream scoop with a 2-inch diameter. You have an ice cream cone with a 2-inch diameter and a height of 5 inches. If you place one scoop of ice cream on the cone and let the ice cream melt, will it spill over the cone?

rectangular piece of board is 61.8 centimeters by 84.9 centimeters. What is the perimeter of the piece of board?

How do I factor 6y^2-23+7