Answer:
A: (2, 11).
Step-by-step explanation:
For an ordered pair to be a solution of an equation, the ordered pair must "fit".
A: (2, 11).
11 = 3(2) + 5
11 = 6 + 5
11 = 11
So, (2, 11) is a solution.
B: (3, 13).
13 = 3(3) + 5
13 = 9 + 5
13 = 14
Since 13 is not the same thing as 14, (3, 13) is not a solution.
Since A works but B doesn't, choices C and D are both eliminated. A is your answer.
Hope this helps!
We will use Binomial Distribution in this case.
Since the coin is tossed 15 times. N which is the number of trails will be 15.
P = Probability of heads
Q = Probability of tails
X = No. heads occurring in each toss.
So, now we have to find the probability for exactly 10 heads.
P(x = 10) = C(15, 10) P^x Q^N-x
C(15, 10) (1/2)^10 (1/2)^5 = 0.0916
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