Given the system of equations 2x – 8y = 0 and –2x + 4y = –8, which statements are true? check all that apply.
the x-variable will cancel when adding the system of equations.
after adding the system of equations, you get –12y = –8.
y = 2
x = 8
the solution to the system is (2, 8).

The answer is the following

A.)The x-variable will cancel when adding the system of equations.

C.)y = 2

D.) x = 8

Step-by-step explanation:

hope this helps

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204