What do average mean in math

What is 2x - 3y = 8 (y)

Samuel used 1/5 an ounce of butter to make 1/25 of a pound of jelly. How many ounces of butter is there per pound of jelly?

A line horizontally drawn from the center of the circle. a. Radius b. Axiom c. Circumference d. Vertex

There are 2,250 benches in a city. The number of red benches is 350 more than the number of blue benches. How many red benches are there in the city?

Every day, the Webster Pet Store uses 1/2 of a bag of dog food to feed the dogs. How many days will 3 1/2 bags of dog food last?

A car is 200 km from its destination after 1 hour and 80 km from its destination after 3 hours.

Consider the equation x-3=5. a. Multiply both sides of the equation by a constant, and show that the solution set did not change. Now, multiply both sides by x. b. Show that x=8 is still a solution to the new equation.

A gardener uses a tray of 6 conical pots to plant seeds. each conical pot has a radius of 3 centimeters and a depth of 8 centimeters. about how many cubic centimeters of soil are needed to plant the full tray? round to the nearest cubic centimeter.

The price of 2 bananas are $1.00. How much would 7 bananas cost?

students' scores on an anthropology test have a mean of 31 with a standard deviation of 3.5 if rochelle scores 20 on her test, how many standard deviations away from the mean is her score