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n200080 [17]
3 years ago
13

What is, the slope of the line described by the equation below? y-7 = 2(x - 10)

Mathematics
2 answers:
Arturiano [62]3 years ago
7 0

Answer:

This is your question:

y - 7 = 2(x - 10)

This is your answer:

y - 7 = 2x - 20

Step-by-step explanation:

To find your answer, you need to rearrange the equation to be in the slope-intercept form:

y = mx + b,

Where "M" is, the slope and "B" is the y-intercept:

y - 7 = 2x - 20

So, therefore you get your answer which is y - 7 = 2x - 2!

Scorpion4ik [409]3 years ago
6 0

Answer:

Slope is 2.

Step-by-step explanation:

y=mx+b, m= slope.

y-7=2x-20

y=2x-27

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3 years ago
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In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the fol
Julli [10]

Answer:

0.071,1.928

Step-by-step explanation:

                                                Downtown Store   North Mall Store

Sample size   n                             25                        20

Sample mean \bar{x}                         $9                        $8

Sample standard deviation  s       $2                        $1

n_1=25\\n_2=20

\bar{x_1}=9\\ \bar{x_2}=8

s_1=2\\s_2=1

x_1-x_2=9-8=1

Standard error of difference of means = \sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}

Standard error of difference of means = \sqrt{\frac{2^2}{25}+\frac{1^2}{20}}

Standard error of difference of means = 0.458

Degree of freedom = \frac{\sqrt{(\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}})^2}{\frac{(\frac{s_1^2}{n_1})^2}{n_1-1}+\frac{(\frac{s_2^2}{n_2})^2}{n_2-1}}

Degree of freedom = \frac{\sqrt{(\frac{2^2}{25}+\frac{1^2}{20}})^2}{\frac{(\frac{2^2}{25})^2}{25-1}+\frac{(\frac{1^2}{20})^2}{20-1}}

Degree of freedom =36

So, z value at 95% confidence interval and 36 degree of freedom = 2.0280

Confidence interval = (x_1-x_2)-z \times SE(x_1-x_2),(x_1-x_2)+z \times SE(x_1-x_2)

Confidence interval = 1-(2.0280)\times 0.458,1+(2.0280)\times 0.458

Confidence interval = 0.071,1.928

Hence Option A is true

Confidence interval is  0.071,1.928

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3 years ago
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Answer:

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Step-by-step explanation:

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