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AlexFokin [52]
3 years ago
14

Explain why the commutative and associative properties don't hold true for subtraction and division but the identity properties

do
Mathematics
1 answer:
dexar [7]3 years ago
7 0
The commutative and associative properties do not apply to both subtraction and division because once you move around your variables, you will produce different results, whereas in addition and multiplication, any change in position of numbers won't affect the result. The identity properties apply to them because once you add, subtract, multiply, or divide a certain number from any other number, you produce the same result, or, in other words, keep the number's "identity".
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Step-by-step explanation:

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​If Alfie tosses the paper cup more times, what is the expected ​number of times that the cup will land on its side?
IRINA_888 [86]

Question:

Alfie tossed a paper cup in the air 150 times and recorded the side it landed on.

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If Alfie tosses the paper cup 100 more times what is the expected number of times the cup will land on its side?

 

Answer:

The expected number of times the cup will land on its side is 25 times

Step-by-step explanation:

Given

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Upside\ down = 53

Side = 37

Required

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P(Side) = \frac{n(Side)}{Total}

P(Side) = \frac{37}{150}

P(Side) = 0.247

Next, we calculate the expected value; E(x) using:

E(x) = n * P(x)

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So:

E(x) = 100 * 0.247

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3 0
3 years ago
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konstantin123 [22]

Answer:

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4 years ago
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