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umka2103 [35]
3 years ago
15

Corey walked three blocks east and then six blocks north. All the blocks were the same length. What is the value of the slope of

the line from where Corey began walking to where he finished?
-3
-2
2
3
Mathematics
1 answer:
jenyasd209 [6]3 years ago
3 0

Answer:

The slope is 2

Step-by-step explanation:

We are going to call (0,0) the point where Corey began walking. If he walked three blocks east he would be at the point (3,0), once there he walks 6 blocks north and make it to the point (3,6)

The slope m of the line that passes through point (0,0) and (3,6) is

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olga2289 [7]

Answer:

Se=1.2

Step-by-step explanation:

The standard error is the standard deviation of a sample population. "It measures the accuracy with which a sample represents a population".

The central limit theorem (CLT) states "that the distribution of sample means approximates a normal distribution, as the sample size becomes larger, assuming that all samples are identical in size, and regardless of the population distribution shape"

The sample mean is defined as:

\bar X =\frac{\sum_{i=1}^n x_i}{n}

And the distribution for the sample mean is given by:

\bar X \sim N(\mu,\frac{\sigma}{\sqrt{n}})

Let X denotes the random variable that measures the particular characteristic of interest. Let, X1, X2, …, Xn be the values of the random variable for the n units of the sample.

As the sample size is large,(>30) it can be assumed that the distribution is normal. The standard error of the sample mean X bar is given by:

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If we replace the values given we have:

Se=\frac{12}{\sqrt{100}}=1.2

So then the distribution for the sample mean \bar X is:

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5 0
3 years ago
Please help simplify this...
juin [17]
Answer is 36.
First use the negative exponent rule. When a number is put to the negative power it becomes a fraction
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Now 3 to the second power is 9
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Now multiply 4 x 9 (dividing by 1/9 is the same as multiplying by 9)

4 x 9= 36
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Answer:

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Step-by-step explanation:

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