15 /4 ÷ 3 /4 I need help

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Step-by-step explanation:

5

5

Step-by-step explanation: 15 divided by 3 = 5           4 divided 4 = 1  

So the fraction would be 5/1 and 5/1 = 5

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