Question

What is the solution to the system of equations? y=0.7x-22x y=25?

1) (15, 8.5)
2) (-15, 8.5)
3) (10, 5)
4) (3, 0.1)
5) I don't know

Answer 1

To find the solution, you need to solve the two equations simultaneously. Substitute y from one equation into the other to get an equation with only x. Solve for x, then substitute this value into either of the original equations to find y. The solution to the system of equations is not among the provided options.

Step-by-step explanation:

To find the solution to the system of equations, we need to solve the two equations simultaneously. The given equations are:

y = 0.7x - 22x

y = 25

We can substitute the value of y from the second equation into the first equation:

25 = 0.7x - 22x

25 = -21.3x

To solve for x, we divide both sides of the equation by -21.3:

x = -25 / -21.3

x = 1.17

Now we can substitute this value of x back into either of the original equations to find the value of y:

y = 0.7(1.17) - 22(1.17)

y = 0.819 - 25.74

y = -24.92

Therefore, the solution to the system of equations is (1.17, -24.92). The answer is not among the provided options, so it is not listed.