Line a is a perpendicular bisector of line segment k m. it intersects line segment k m at point l. line a also contains point n. line segment k l is 9 x +5. line segment k n is 14 x minus 3.
what is the length of segment lm?

__ units

the answer is 23

Step-by-step explanation:

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