U = 2i - j and v = 6i + 4j

A. 60.26°
B. 119.74°
C. 1.05°
D. 299.74°

55.55

Step-by-step explanation:

Hope that helped

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

or