Which pair of equations represents two perpendicular lines?

1. 2x-5y=45 and y-5/2x=-9

2.-3x+2y=10 and 3y=-2x+12

3.7x+4y=20 and y-3 = - 4/7x

4. x=4y+4 and 4x+4y=4

Deon, a scheduler at Mangel-Wurzel Transport, gets a call from a regular customer needing to move 19.8m^3 of rock and soil, which Deon knows from previous experience has an average density of 650/kgm^3.

Each Friday, the school prints 400 copies of the school newsletter. The equation c = 400w models the relationship between the number of weeks and the total number of copies of the newsletters printed. What is true of the graph of this scenario

Sally has 5 red flags, 3 green flags, and 4 white flags. how many 12 -flag signals can she run up a flag pole

How many total tens in 7151

What's 950 dividend by 48

Solve the equation. x - 4 = - 7 Question 4 options: a3 b-11 c11 e-3

84 is 75% of what number

What is required in a proportional relationship that is not required nof a general linear relationship?

Whitney's room is 4 yd long. Whitney's room is (more than, less than, same as) 4 ft long

Abby is buying a rectangular widescreen TV that she will hang on the wall between two windows such that the longer side of the TV is horizontal.