In the figure, cd = ef and ab = ce. complete the statements to prove that ab = df. cd + de = ef + de by the property of equality. ce = cd + de and df = ef + de by . ce = df by the property of equality. given, ab = ce and ce = df implies ab = df by the property of equality.

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

its totaly b

your welcome btw

to complete this square you have to rotate about the origin 270 degrees clockwise.