The slopes of perpendicular line segments are start fraction one over three end fraction and start fraction d over five end fraction. what is the value of d?

d = -15

Step-by-step explanation:

The slopes of perpendicular lines have a product of -1.

1/3·d/5 = -1

d/15 = -1 . . . . simplify

d = -15 . . . . . multiply by 15

d

step-by-step explanation:

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