16
You would have to take the cube root of 400000, which equals 73.68
6x+7y=-6 3(-2x-3y=2) +________ -2y=0 => y=0 Therefore x=-1
75
You would take 2 and replace it for x in your other equation and solve.
28
I would use substitution. Turn the second equation into y=8-2x, put it into the first and solve for x. Then put x into one of the equations and solve for y.So...2x-3(8-2x)=24 --> 2x-24+6x=24 --> 8x=48 --> x=6y=8-(2x6) --> y=8-12 --> y=-4
You would do it it by oppisites. 3+2+4=9 which equals C.
What are we solving here for, Z, X, or Y?If solve for Z then the answer would be z = x + yIf solve for X then the answer would be z = z - yIf solve for Y than the answer would y = z - xHope this help.
Because this equation has four variables, it would require four unique equations involving only these four variables to solve.
Can't be done unless you have another equation with the same x and y. Then you would solve for simultaneous equations.
To solve for x you would first subtract 24 from each side. You would then divide both sides by 2. The answer is x=(y-24)/2