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forsale [732]
3 years ago
9

Camryn went to the store to buy 2.5 pounds of grapes. She paid with a $10 bill and a $5 bill and recieved $3.93 as change. She a

lso paid $1.12 in taxes. What was the cost for one pound of grapes before taxes? Do not include $ in your answer.
Mathematics
2 answers:
ankoles [38]3 years ago
6 0

Answer:

3.98

Step-by-step:

$15.00 - 3.93 - 1.12 = 9.95 spent on the grapes

9.95/2.5 pounds = 3.98 per pound

Harrizon [31]3 years ago
4 0

Answer:

3.98

Step-by-step:

$15.00 - 3.93 - 1.12 = 9.95 spent on the grapes

9.95/2.5 pounds = 3.98 per pound

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In an effort to determine whether any correlation exists between the price of stocks of airlines, an analyst sampled six days of
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Answer:

Check the explanation

Step-by-step explanation:

Following table shows the calculations:

Delta, X      Southwest , Y            X^2              Y^2                      XY

45.96               38.76               2112.3216     1502.3376          1781.4096

46.8                 45.41                2190.24         2062.0681        2125.188

47.93                15.7                 2297.2849      246.49            752.501

51.78                49.58              2681.1684      2458.1764        2567.2524

52.17                44.34              2721.7089      1966.0356        2313.2178

47.36                18                   2242.9696            324               852.48

Total 292       211.79               14245.6934      8559.1077      10392.0488

Sample size: n =6

Now

S_{yy}=\sum y^{2}-\frac{\left (\sum y \right )^{2}}{n}=1083.27

S_{xx}=\sum x^{2}-\frac{\left (\sum x \right )^{2}}{n}=35.03

S_{xy}=\sum xy-\frac{\left (\sum x \right )\left (\sum y \right )}{n}=84.94

The coefficient of correlation is :

r=\frac{S_{xy}}{\sqrt{S_{xx}S_{yy}}}=0.436

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3 years ago
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kati45 [8]
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dedylja [7]
15+12+8+x=44
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4 years ago
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The dimensions of a trapezoid are shown below. Which equation could you use to find the Area of the Trapezoid?
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Answer:

See Explanation

Step-by-step explanation:

No trapezoid is attached; so, I will solve on a general note

The area of a trapezoid is:

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Using the attached image as a point of reference;

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Answer:

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Step-by-step explanation:

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3 years ago
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