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7nadin3 [17]
3 years ago
15

Just need help with c, f, & e please provide a step by step explanation

Mathematics
1 answer:
Pepsi [2]3 years ago
8 0

Good morning

Answer:

<h2>c. (24 , 2)</h2><h2>e. (-2 , 0)</h2><h2>f. (0 , -2/11)</h2>

Step-by-step explanation:

c.

f(x) =2 \\\\then\\\\\frac{x+2}{x-11} =2\\\\then\\\\x+2 = 2(x-11)\\\\then\\\\x+2=2x-22\\\\then\\\\x=24

then the point (24 , 2) is on the graph.

______________________________

e.

f(x) =0 \\\\then\\\\\frac{x+2}{x-11} =0\\\\then\\\\x+2 = 0\\\\then\\\\x=-2

Then the x-intercept is (-2 , 0)

_________________________

f.

f(0) = (0+2)/(0-11) = 2/(-11) = -2/11

then the y-intercept is (0 , -2/11)

____________________________________________

:)

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:


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A manager wishes to determine the relationship between the number of miles (in hundreds of miles) the manager's sales representa
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Answer:

y=3.529 x +37.91

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y(8) = 3.529*8 + 37.91= 66.142

And we can predict the sales representative travelled 11 miles replacing x =11 and we got:

y(11) = 3.529*11 + 37.91= 76.729

Step-by-step explanation:

For this case we have the following data:

Miles Traveled x: 2,3,10,7,8,15,3,1,11

Sales y :31,33,78,62,65,61,48,55,120

For this case we need to calculate the slope with the following formula:

m=\frac{S_{xy}}{S_{xx}}

Where:

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}

So we can find the sums like this:

\sum_{i=1}^n x_i =60

\sum_{i=1}^n y_i =553

\sum_{i=1}^n x^2_i =582

\sum_{i=1}^n y^2_i =39653

\sum_{i=1}^n x_i y_i =4329

With these we can find the sums:

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=582-\frac{60^2}{9}=182

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}=4329-\frac{60*553}{9}=642.33

And the slope would be:

m=\frac{642.33}{182}=3.529

Nowe we can find the means for x and y like this:

\bar x= \frac{\sum x_i}{n}=\frac{60}{9}=6.67

\bar y= \frac{\sum y_i}{n}=\frac{553}{9}=61.44

And we can find the intercept using this:

b=\bar y -m \bar x=61.44-(3.529*6.67)=37.91

So the line would be given by:

y=3.529 x +37.91

We can predict the sales representative travelled 8 miles replacing x =8 and we got:

y(8) = 3.529*8 + 37.91= 66.142

And we can predict the sales representative travelled 11 miles replacing x =11 and we got:

y(11) = 3.529*11 + 37.91= 76.729

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Answer:

The freezing point of the water with the added potassium is 24 degrees Fahrenheit.

Step-by-step explanation:

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