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BabaBlast [244]
3 years ago
14

I need help with this anybody know it? 3(2n-7)=9

Mathematics
1 answer:
Ksivusya [100]3 years ago
6 0

Answer:

5

Step-by-step explanation:

3(2n-7)=9

^        ^

6n-21=9

   <u>+21  +21</u>

 <u>6n</u>=<u>30</u>

  6     6

n=5      :)

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What is an equivalent expression for the quotient? 4²/4⁵
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Answer:

\frac{1}{ {4}^{3} }

Step-by-step explanation:

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8 0
3 years ago
The number of errors in a textbook follow a Poisson distribution with a mean of 0.03 errors per page. What is the probability th
maksim [4K]

Answer:

The probability that there are 3 or less errors in 100 pages is 0.648.        

Step-by-step explanation:

In the information supplied in the question it is mentioned that the errors in a textbook follow a Poisson distribution.

For the given Poisson distribution the mean is p = 0.03 errors per page.

We have to find the probability that there are three or less errors in n = 100 pages.

Let us denote the number of errors in the book by the variable x.

Since there are on an average 0.03 errors per page we can say that

the expected value is, \lambda = E(x)

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Therefore the we find the probability that there are 3 or less errors on the page as

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                                 = 0.05 + 0.15 + 0.224 + 0.224

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 The probability that there are 3 or less errors in 100 pages is 0.648.                                

7 0
3 years ago
Read 2 more answers
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