(−2/3)(1/6) I need to know how to do fraction accurately

Answer && Step-by-step explanation:

Simple.

- 2/3  1/6 line up together, we already know end result is neg since only one neg sign

2*1 = 2

6*3 == 18

ans == -2/18

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

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