To calculate 31^2, Emily mentally figures the value 30^2 and adds 61. Emily subtracts a number from 30^2 to calculate 29^2. What number does she subtract?

3 times a number is 10 less than the square of that number. Find the negative solution.

Marcia needs to paint all the faces and the base of a model of a pyramid she made for her history project. The dimensions of the pyramid are shown. What is the total surface area of the pyramid? A square pyramid is shown.

Brenda said that the number 2 is prime because it has only two factors. Carla said that the number 2 is composite because it is even, and all even numbers are composite. Who is correct? A) Brenda is correct. B) Carla is correct.

A triangle has two sides of 7 and 12 what value could the length of the third side be A: 11 B: 5 C: 17 D: 7 E: 3 F : 9

If a project will take 35 employees 2,940 hours to complete, how many hours will each employee have to work?

When a photo is reduced or enlarged its length to width radio usually remains the same. Aurelia wants to enlarge a 4-inch by 6-inch photo so that it has a wider of 15 inches. Use a ratio table to determine the new length of the photo.

An architect is designing a building on a triangular plot of land. If the base of the triangle is 100.8 feet and the height is 96.3 feet, find the available floor area of the building. Show all of your work

Data obtained from a nominal scale: A. must be alphabetic B. can be either numeric or nonnumeric C. must be numeric D. must rank order the data

A teacher has a 2-gallon (32-cup) container of juice. She gives each student 3 cup of juice. Which equation represents the amount of juice that remains, y, after x students are served?

24/30 = 20/x what is the value of x