Apile of sand has a weight of 90kg the sand is put ina small bag a median bag and a large bag in a ratio 2: 3: 7 work out the weight. of the sand in each bag

Make an equation

2x+3x+7x=90

5x+7x=90

12x=90

x=90/12

Now multiply 90/12 times 2 to get the weight of the small bag-15kg

Then multiply 90/12 times 3 to get the weight of the median bag-22.5kg

Lastly multiply 90/12 times 7 toget the weight of the large bag-52.5kg

Small=15kg

median=22.5kg

large=52.5kg

mark other person brainliest

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