A pilot is flying over a straight highway. He determines the angles of depression to two mileposts, 8 mi apart, to be ∠x = 31° and ∠y = 49°, as shown in the figure. (Round your answers to two decimal places.)

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)

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