Help pls Given the system of equations below, what is the coefficient with the x variable if you multiply the top equation to eliminate the y variable?

-3x+9y=12
8x+54y=37

Find the domain of the following expression: 1/(√x)-2

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

What is the length and width of a 84.5 square foot rug? will mark