3. Which step is included in the construction of perpendicular lines using a point on the line? A. Make arcs above and below the given line with a compass.
B. Create two arcs above the given line with a straightedge.
C. Connect two created arcs together with a compass.
D. Measure the constructed angles with a straightedge.

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

lol 2

step-by-step explanation:

the awnser is visionary