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Verizon [17]
3 years ago
12

Quick math help please:)

Mathematics
1 answer:
timofeeve [1]3 years ago
5 0
I think it’s 720 check and see if it’s rightfully
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A manager wishes to determine the relationship between the number of miles traveled​ (in hundreds of​ miles) by her sales repres
kati45 [8]

Answer:

y=3.53 x +37.92  

And for 0 miles if we use the model we got:

y(0)= 3.53*0 +37.92 = 37.92

But for this case. No is not reasonable for a representative to travel o miles and have a positive amount of sales.

Step-by-step explanation:

For this case we assume 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

We want to found a linear model like this one : y = mx+b. Where:

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}  

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}=6.667  

\bar y= \frac{\sum y_i}{n}=\frac{553}{9}=61.444  

And we can find the intercept using this:  

b=\bar y -m \bar x=61.444-(3.529*6.667)=37.917  

So the line would be given by:  

y=3.53 x +37.92  

And for 0 miles if we use the model we got:

y(0)= 3.53*0 +37.92 = 37.92

But for this case. No is not reasonable for a representative to travel o miles and have a positive amount of sales.

8 0
3 years ago
The answer because I hate homework it's to hard<br>​
Charra [1.4K]
The answer to what?
6 0
3 years ago
What is −20÷45−20÷45 ?<br><br><br> A. −25<br><br> B. −16<br><br> C− 1/16<br><br> D. − 1/25
stealth61 [152]
The answer is -25 i just took the test/quiz
7 0
4 years ago
Asap po please thank you po!
jonny [76]

Answer:

Step-by-step explanation:

2.  Should be 500

8.  Should be 290

The rest are correct

4 0
3 years ago
Read 2 more answers
There are 30 oatmeal cookies and 48 chocolate chip cookies to package in plastic containers for her teacher friends at school. S
kirill115 [55]
6 into 30 is 5 & 6 into 48 is 48. She needs a total of 6 plastic containers
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3 years ago
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