Points A, B, C, and D are collinear and positioned in that order. Find x, AB, BC, and CD if AB=2x+4, BC=3x+3, CD=x+5 and AD=24

(hurry! ) which expression is equivalent to the following complex fraction?

Solve the system of equations. y= 2x y= x^2 - 15

Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.