Solve the systems of equations using substitution

-3x+2y=12

x=2y-8

The Great Pyramid of Egypt has a base of 1500 feet and a height of 2800 feet. What is the volume of the pyramid? A. 4,200,000 ft^3 B. 1,400,000 ft^3 C. 1,206,456.67 ft^3 D. 2,555,879.21 ft^3

Mr. Ikeler conducted a study investigating the effectiveness of a new method for teaching a mathematics unit. He recruited 80 students at a college and randomly assigned them to two groups.

Two angles with measures (5x + 7) and (15x - 7) are supplementary. what is the value of x? a. x = 9 c. x = 42 b. x = 18 d. x = 15

Using the sum and difference formula to determine the exact value of cos165

How do you do the vertical line test for functions?

The pie chart is commonly used to present: A. budgets B. temperatures C. rain fall D. population growth

Two friends start a business. Together they spent 800 dollars for their initial inventory. They will sell all of their initial inventory for a profit, which will be split evenly among themselves.

If a square has 10 equal parts and 4 are shaded and 6 are blank what is the percent represented by the shaded area

John needs to cut three strips of woods, 25.5 cm, 15.3cm and 9.25cm long. He has a strip that is 72 cm long. How long will leftover piece be after he cuts what he needs?

Which property should be used to solve this equation 4+x=13