Solve by substitution. 7x+2y=-19 and - x+2y=21

What is the linear equation x*3y=6

The perimeter of a rectangle is 96 inches. If the width were tripled, the width would be 36 inches more than the length. Find the width of the rectangle.

Estimate the quotient for 338.7:49

A cylinder has a volume of 75.36 cubic feet and a radius of 3 feet. What is the height of the cylinder

54*8+6+14 = what's the answer

A stadium has two sponsorship deals. Deal A had revenue of $100,000 and expense of $10,000. Deal B has revenue of $50,000 and expenses of $20,000. What is the stadium's average profit as a percentage of revenue on these two deals?

Type the expression that results from the following series of steps: Start with y , times by 7, then subtract 2.

Which expression shows a way to find 2,813*7

O patrimônio que a contabilidade estuda e controla, registrando todas as ocorrências nele verificadas.

How do you solve an inequality