The larger of two numbers is three times the smaller. five less than the larger number is the same as 7 more then the smaller number. find the two numbers.

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.

Typically, a point in a three-dimensional cartesian coordinate system is represented by which of the following a) (x, y,v) b) (w, x,y) c) x, y,z d) (x, y,z)