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charle [14.2K]
3 years ago
12

While shopping you know the average price for a CD is 8 including tax you have 112 in your pocket how about how many CDs can you

buy
Mathematics
1 answer:
krok68 [10]3 years ago
5 0
The answer is 14 because 112/8=14
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What base-ten number is 14 tens and 4 ones?¿
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Answer:144


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I just need the final answer. thanks! :)
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4 miles per hour I think
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A hardware store sells light bulbs in different quantities. the graph shows the cost of various quantities. according to the gra
skelet666 [1.2K]

Looking at the two black dots

5 bulbs cost $9

Divide total cost by number of bulbs bought:

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Divide total cost by number of bulbs bought:

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The cost for one bulb is $1.80

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10. Elaine is buying cube shaped blocks to add to her mantle as decoration. 1 point
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Step-by-step explanation:

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Previous Question Question 14 of 20 Next Question A company randomly surveys 15 VIP customers and records their customer satisfa
Ann [662]

Answer:

71.4699, 81.7301.

Step-by-step explanation:

So, the following are the scores: 74

90

84

78

61

65

62

67

73

75

76

95

71

98

80

Let,\;the\;total\;sum\;of\;the\;scores\;be:\sum x =1149

Then,\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\sum x^2=89795

The length of the score : 15

Then, let the size of the scores be n : 15.

Then, we have to find the mean.

                                      \bar{x}=\frac{\sum x}{n}

                                         =\frac{1149}{15}=76.6

Then,\;we\;have\;to\;find\;standard\;deviation:S=\sqrt{\frac{\sum x^2-n.(\bar{x})^2}{n-1} }

                                         =\sqrt{\frac{89795-15\times(76.6)^2}{15-1} }=11.2808

The\;degree\;of\;freedom:n-1=14

So,\;the\;significant\;level:\alpha=1-0.90=0.10

and\;the\;critical\;value:t_{\frac{\alpha}{2} }=1.7613

Finally:\\=\bar{x}\;\pm\;t_{\frac{\alpha}{2} }\;\frac{S}{\sqrt{n} }\\=(71.4699, 81.7301)

6 0
3 years ago
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