What is a negative minus a negative
2 answers:
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Answer:
<h2>12 4/8</h2>Step-by-step explanation:
1. First step
ADD
7+4=11
7+5=12
so
11
2. Second step
Now simplify
11 12/8 = 12 4/8 = 12 1/2
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Answer:
b. $28
Step-by-step explanation:
We have these following probabilities:
0.4 = 40% probability of $40
0.2 = 20% probability of $30
0.2 = 20% probability of $20
0.2 = 20% probability of $10
The expected value is:
We multiply each value by its probability. So
So the correct answer is:
b. $28