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PtichkaEL [24]
3 years ago
10

HELLLLPPPPPP PLEASEEEEEEEE....

Mathematics
2 answers:
oee [108]3 years ago
5 0
For this case we have the following system of equations:
 5x + 3y = 17
 -8x - 3y = 9
 The solution to this system can be written in matrix form as:
 Ax = b
 Where, A is a matrix that is given by:
 A = [5 3; -8 -3]
 The determinant of this matrix 2 * 2 is given by:
 lAl = (5) * (- 3) - (3) * (- 8)
 lAl = -15 - (-24)
 lAl = -15 + 24
 lAl = 9
 Answer:
 
The determinant for solving this linear system is:
 
lAl = 9
Nataly_w [17]3 years ago
5 0

|A| =  

 

⇒ 5

⇒ 3  

⇒ -8

⇒ -3

|Ax| =  

 

⇒ 17

⇒ 3  

⇒ 9

⇒ -3

|Ay| =  

 

⇒ 5

⇒ 17  

⇒ -8

⇒ 9

Step-by-step explanation:

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A marketing research consultant hired by Coca-Cola is interested in determining if the proportion of customers who prefer Coke t
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Answer:

A one-tailed hypothesis will be used to perform the test.

Step-by-step explanation:

The purpose of the marketing research consultant hired by Coca-Cola is to determine whether the the proportion of customers who prefer Coke to other brands is over 50%.

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The marketing research consultant can perform a single proportion hypothesis test to determine whether greater than 50% of customers prefer Coca-Cola to other brands.

Since we need to determine whether the population percentage is greater than a null value, the hypothesis is not two-tailed.

The hypothesis can be defined as:

<em>H₀</em>: The proportion of people who favor Coca-Cola over other brands was 55%, i.e. <em>p</em> = 0.50.

<em>Hₐ</em>: The proportion of people who favor Coca-Cola over other brands was more than 55%, i.e. <em>p</em> > 0.50.

Thus, a one-tailed hypothesis will be used to perform the test.

6 0
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Can someone plz explain how to do this?​
andre [41]
Subtract y
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5 0
3 years ago
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