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Contact [7]
4 years ago
7

What is 3n-22= -20​

Mathematics
2 answers:
viva [34]4 years ago
8 0

Answer:

n = 2/3

Step-by-step explanation:

3n - 22 = -20

Add 22 to both sides

-20 + 22 = 2

3n = 2

Divide both sides by 3

2 / 3 = 2/3

n = 2/3

Let me know if I've done something wrong :)

Nataly_w [17]4 years ago
7 0

Answer:

n = \frac{2}{3}

Step-by-step explanation:

  1. Add 22 to each side, so it now looks like this: 3n = 2
  2. Divide each side by 3 to cancel out the 3 next to n. It should now look like this: n = \frac{2}{3}  

I hope this helps!

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Assume the number of typo errors on a single page of a book follows Poisson distribution with parameter 1=3. Calculate the proba
asambeis [7]

Answer:

(i). 0.03981

(ii).0.0048

Step-by-step explanation:

The probability density function of Poisson distribution is:

P(X=x,\lambda)=\frac{e^{-\lambda}\lambda^x}{x!} \; \;\;\,\; x=0,1,2,...

Consider <em>X</em> is a number of typos error on a single page of a book and <em>X</em> follows the Poisson distribution with \lambda = \dfrac{1}{3}

(i) Exactly two typos:

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(ii) Two or more typos:

       \begin{aligned}P(X\geq2,\frac{1}{3})&=1-[P(X=0)+P(X=1)+P(X+2)]\\&=1-[0.7165+0.2388+0.03981]\\&=1-0.9952\\&=0.0048\end{aligned}

7 0
4 years ago
15=3(2x+4)-3 prove x=1
kherson [118]

Answer:

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Step-by-step explanation:

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4 years ago
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forsale [732]
Hello!

To solve this you have to find what the biggest number that each number can be divided by

You can do this by listing the multiples of the smallest number

The multiples of 6 are

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15 can't be divided by 6 so it is not 6

All three numbers can be divided by 3 so this is the answer

The answer is 3

Hope this helps!
8 0
3 years ago
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