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marshall27 [118]
4 years ago
5

The total cost for 8 bracelets, including shipping was $54. The shipping charge was $6. Define your variable and write an equati

on that models the cost of each bracelet. Would it be 8x+6=54
Mathematics
2 answers:
Alenkasestr [34]4 years ago
5 0
8x+6=54
    -6   -6
    8x=48   
8x /8=48/8
      x=6 the bracelets were $6 a piece

AleksandrR [38]4 years ago
3 0

Answer:

The equation that models the cost of each bracelet is 8x+6=54

Step-by-step explanation:

Let the cost of each bracelet be = x

So, the cost of 8 bracelets are = 8x

The shipping fee is = $6.

The total cost for 8 bracelets, including shipping was $54.

We can denote this mathematically as:

8x+6=54

Now solving for x to get the cost of 1 bracelet.

8x=54-6

=> 8x=48

Dividing both sides by 8;

We get x = 6

So, the cost of each bracelet is $6.

The equation that models the cost of each bracelet is 8x+6=54

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Answer:

There is not sufficient evidence to support a claim of linear correlation between the two variables.

Step-by-step explanation:

The data provided is as follows:

X        Y

78       5.5

79       8.8

56.2      3.3

68.3       1.7

77.9      10.8

38.2       0.1

(a)

The scatter plot is attached below.

(b)

Use the Excel function: =CORREL(array1, array2) to compute the correlation coefficient, <em>r</em>.

The correlation coefficient between the number of internet users and the award winners is,

<em>r</em> = 0.797.

(c)

The test statistic value is:

t=r\sqrt{\frac{n-2}{1-r^{2}}}

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The degrees of freedom is,

df = n - 2

   = 6 - 2

   = 4

Compute the <em>p</em>-value as follows:

p-value=P(t_{n-2}

*Use a <em>t</em>-table.

<em>p</em>-value = 0.057 > <em>α</em> = 0.05

The null hypothesis will not be rejected.

Thus, it can be concluded that there is not sufficient evidence to support a claim of linear correlation between the two variables.

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Malik solved this system of equations.
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The variable y in the 2nd equation has a coefficient of 1...so there will be fewer steps to the solution
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