A man keeps birds in a big bird cage in his garden.2/5 of the birds are brown.4 of the birds are blackthe rest of the birds are whitethe man takes a bird out of the cage at randomthe probability that this bird is black is 0.2How many of the birds in the cage are white

Step-by-step explanation:

One pack of birds seed weight 1, 3 kg. Calculate how many kilograms of seed Michael gives to his FIVE cages in

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

hope this !

let me know