Answer:
It's answer is C.
<u>They </u><u>are </u><u>two </u><u>events </u><u>in </u><u>which </u><u>either </u><u>one </u><u>or </u><u>the </u><u>other </u><u>must </u><u>happen</u><u>, </u><u> </u><u>but </u><u>they </u><u>cannot </u><u>happen </u><u>at </u><u>the </u><u>same </u><u>time</u><u>. </u>
Here's the answer for your problem
Answer: x-intercept = -1, 1, 2, 3
The probability that Gina randomly selected two red marbles is 1/19
<u>Explanation:</u>
Total number of marbles = 7 + 5 + 8
= 20
The probability of getting two red marbles in the fraction form is given as:
P(first red marble) = number of red marbles / total number of marbles
P(first red marble) = 
P(second red marble) = number of red marbles after 1 white marble is removed / total number of marbles after 1 red marble is removed.
P(first red marble) = 
P(two red marbles) = P(first) X P(second)
= 
= 
Therefore, the probability that Gina randomly selected two red marbles is 1/19
P(2, 5) * 3.5 = P' (7, 17.5)
Q(2, 1) * 3.5 = Q' (7, 3.5)