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Dafna1 [17]
2 years ago
8

Find the value of this expression if x = -1 and y=7. Xy / 8

Mathematics
1 answer:
ioda2 years ago
7 0

-7/8

Step-by-step explanation:

\frac{xy}{8}  \\  =  \frac{( - 1) \times 7}{8}  \\  =  -  \frac{7}{8}

So, the value of xy/8 is -7/8

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Read 2 more answers
You have 100 quarters in a jar. One of the quarters is double sided (heads). You pick out a random quarter and flip it 7 times,
zysi [14]

Answer:

Probability of having the double sided coin is 1 %

Probability of getting heads on the next flip is 50%

Step-by-step explanation:

Based on the information given to us in the question we have a total of 100 coins in the bag and only 1 is double heads. Therefore the probability of you picking the double sided coin is \frac{1}{100} or 1 % . This probability is not affected by the fact that the coin you chose got heads 7 times in 7 flips.

Since a coin has 2 sides and you do not know whether the coin you have is the double sided coin then you have to assume that it is a normal 2 sided coin. Therefore a normal 2 sided coin has a probability of \frac{1}{2} or 50% with every flip of getting heads.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

8 0
3 years ago
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