Abag holds 20 jelly beans: 5 red, 10 green, 4 blue, and 1 black. what is the probability of choosing a red jelly bean and replacing it before choosing a black jelly bean?

Probability of Red jelly bean= 5/20, 25%

Probability of Black jelly bean=1/20,5%

true !

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