Solve each pair of simultaneous equations by elimination method. 2x + 3y-1= 0 5x + 2y +3= 0​

2x + 3y - 1 = 0

5x + 2y + 3 = 0

10x + 15y - 5 = 0

10x + 4y + 6 = 0

11y + 1 = 0

11y = -1

y = -1/11

2x + 3 × -1/11 - 1 = 0

2x - 3/11 - 1 = 0

2x = -14/11

x = -7/11

step-by-step explanation: yes

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