URGENT 15 POINTS
Which event has a probability of 1/2? Select two answers.

A. Rolling a number greater than 6 on a six-sided number cube
B. A flipped coin landing on tails
C. A flipped coin landing on heads or tails
D. Picking a blue marble from a bag of 6 red marbles and 4 blue marbles
E. Rolling an odd number on a six-sided number cube

It is C and E. It can't be A or D or B.

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