How do I change 7/20 to a decimal

0.35

Step-by-step explanation:

in order to do this, you would multiply 720 by 100% .

Multiplying 720 by 100% allows you to be able to use long division → you only multiply 100 by the numerator (the top number of the fraction).

convert 720 to a decimal, simply divide 7 by 20 .

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