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Hunter-Best [27]
3 years ago
5

Give the equation of the line perpendicular to the line through (3, 2) and (-2, 4) that

Mathematics
1 answer:
AVprozaik [17]3 years ago
5 0

Answer:

Step-by-step explanatio

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3:5
1:1
1.5 or 1:5 not sure
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3 years ago
The number 0.0002 is 1/10 of
Ratling [72]

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I think it is 0.002

6 0
2 years ago
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What is the value of y in the sequence below? 2, y, 18, -54, 162 ,...
mixer [17]

Answer:

6

Explanation:

mutiply by 3 first

2*3= 6

6*3= 18

to get to -54 , mutiply by -3 with 18

-3*18= -54

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2 years ago
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The weight of an adult swan is normally distributed with a mean of 26 pounds and a standard deviation of 7.2 pounds. A farmer ra
Snezhnost [94]
Let X denote the random variable for the weight of a swan. Then each swan in the sample of 36 selected by the farmer can be assigned a weight denoted by X_1,\ldots,X_{36}, each independently and identically distributed with distribution X_i\sim\mathcal N(26,7.2).

You want to find

\mathbb P(X_1+\cdots+X_{36}>1000)=\mathbb P\left(\displaystyle\sum_{i=1}^{36}X_i>1000\right)

Note that the left side is 36 times the average of the weights of the swans in the sample, i.e. the probability above is equivalent to

\mathbb P\left(36\displaystyle\sum_{i=1}^{36}\frac{X_i}{36}>1000\right)=\mathbb P\left(\overline X>\dfrac{1000}{36}\right)

Recall that if X\sim\mathcal N(\mu,\sigma), then the sampling distribution \overline X=\displaystyle\sum_{i=1}^n\frac{X_i}n\sim\mathcal N\left(\mu,\dfrac\sigma{\sqrt n}\right) with n being the size of the sample.

Transforming to the standard normal distribution, you have

Z=\dfrac{\overline X-\mu_{\overline X}}{\sigma_{\overline X}}=\sqrt n\dfrac{\overline X-\mu}{\sigma}

so that in this case,

Z=6\dfrac{\overline X-26}{7.2}

and the probability is equivalent to

\mathbb P\left(\overline X>\dfrac{1000}{36}\right)=\mathbb P\left(6\dfrac{\overline X-26}{7.2}>6\dfrac{\frac{1000}{36}-26}{7.2}\right)
=\mathbb P(Z>1.481)\approx0.0693
5 0
2 years ago
Reduce 18/45 to simplest form
nadya68 [22]

Answer:

2/5

Step-by-step explanation:

7 0
2 years ago
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