as y = 5x + 64 we can substitute in the first equation getting 7x - 8 (5x + 64) =83 ie 7x -40x - 512 = 83 ie -33x = 595 so x = -18.03 and y = -26.15 Check: 7 x -18.03 = -126.15, 8 x -26.15 = -209.2 , difference 83.05, near enough for the Government.
y=-10 sin 5x sin 5x=y/-10 x=asin(y/-10)/5
8
It seems there might be a typographical error in your question, as "5x y 18" isn't a standard mathematical expression. If you're trying to solve for (x) or (y) in an equation that involves these variables, please provide the full equation (e.g., (5x + y = 18)). Once you have a complete equation, you can isolate one variable to solve for it.
-4
y = 5x^3 - 45x is a polynomial equation that crosses the y axis at x=3.
y=-10 sin 5x sin 5x=y/-10 x=asin(y/-10)/5
if you mean 5x -2y = 10 then y = 2.5x -5
8
It seems there might be a typographical error in your question, as "5x y 18" isn't a standard mathematical expression. If you're trying to solve for (x) or (y) in an equation that involves these variables, please provide the full equation (e.g., (5x + y = 18)). Once you have a complete equation, you can isolate one variable to solve for it.
-4
y = 5x^3 - 45x is a polynomial equation that crosses the y axis at x=3.
This cannot be solved. It needs 2 equations to solve for 2 unknowns.
y = 2x -1 y = 5x -13 So: 5x -13 = 2x -1 5x -2x = 13 -1 3x = 12 x = 4 and by substituting y = 7
0
That's not an equation, it is not solveable.
4
5x+y=-7 3x+y=15 8=D