7x + 2y = 48
7x + (2x3) =48
7x + 6 = 48
7x = 48 - 6
7x = 42
--> x = 6
If events A and B are independent,
For mutually exclusive then p(A or B) = p(A) + p(B).
For not mutually exclusive then p(A or B) = p(A) + p(B) - p(A and B)
And: p(A and B) = p(A) * p(B)
Given: <span>p(A) = 0.22 and p(B) = 0.24.
</span>
<span>∴ p(A and B) = p(A) * p(B) = 0.22*0.24 = 0.0528
</span>
If A and B are mutually exclusive
∴ p(A or B) = p(A) + p(B) = 0.22 + 0.24 = 0.46
If A and B are not mutually exclusive
∴ p(A or B) = p(A) + p(B) - p(A and B) = 0.22 + 0.24 - <span>0.0528 = 0.4072
</span>
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note: Two events are mutually exclusive if it is not possible for both of them to occur, which mean the occurrence of one event "excludes" the possibility of the other event.
19 has two factors: 1, 19
21 has four factors: 1, 3, 7, 21
23 has two factors: 1, 23
And so we need a number that has more than four factors, and is greater than 25.
50 is one number that fits.
Factors of 50: 1, 2, 5, 10, 25, 50
50 has six factors and is greater than 25.
Hope that helped :)
Answer:
1.125
Step-by-step explanation:
Hi there!
The answer is C.
She should use the mode to describe the data obtained from the survey. The mode includes listing the count of all of the different topics and how many students preferred which topic. Rather than just focusing on one topic that was chosen centrally, the mode helps gather data.
Hope this helps!
