2 years ago

3 folders cost $2.91. Which equation would help determine the cost of 2 folders?

Mathematics

1 answer:

-Dominant- [34]2 years ago

8 0

Answer:

194

Step-by-step explanation:

2/3X=291

x=194

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Answer: Mean = 5.25

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Step-by-step explanation:

The mean and variance of a binomial distribution with parameters n (number of trials) and p ( the probability of getting success in each trial) is given by :-

$\text{Mean}=np\\\\\text{Variance}=np(1-p)$

Given : The total number of enter a clothing store : n=7

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Now,

$\text{Mean}=7(0.75)=5.25\\\\\text{Variance}=7(0.75)(0.25)=1.3125\\\\\Rightarrow\ \text{Standard deviation}=\sqrt{1.3125}=1.14564392374\approx1.1456$

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Andrej [43]

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3 years ago

You can buy an 8-pack of paper towels for $8.40 or a 12-pack for $12.36. Which is the better buy?

mixas84 [53]

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