I don’t understand I need help

It's a right triangle so you need to use Pythagorean to find the missing side and then use it to find the angle.

Missing side: 63.2142

Angle is 4.7184 ; other angle is 85.281 but it's not relevant to the answer

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

step-by-step explanation:

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