Suppose you choose a marble from a bag containing 2 red marbles, 5 white marbles and 3 blue marbles. you return the first marble to the bag and choose again. find p (red then blue)

Step-by-step explanation:

Given: Number of red marbles = 2

Number of white marbles = 5

Number of blue marbles  = 3

Total marbles =2+5+3=10

If we choose first marble from the bag, then the probability of having red marbles will be :-

If we choose second marble after replacement (total remains same) from the bag, then the prob ability of having blue marbles will be :-

Since, both the events are independent.

Therefore, the probability of choosing red marble then blue marble is given by :-

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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