Abdi how two electric train sets: A and B. Each train is on its own circular track. He starts both trains at the same time. Train A return to its starting point every 12 seconds. Train B returns to it starting point every 9 sections. If the trains continue traveling, what is the least amount of time, in seconds, that both trains will arrive at the starting points at the same time?

step-by-step explanation:

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

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