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lozanna [386]
3 years ago
9

WHOEVER ANSWERS THIS QUESTION IN 5 MINS WELL GET THE BRAINLIEST ANSWER!!!! Ms. Kitts works at a music store. Last week she sold

6 more tha 3 times the number of CDs that she sold this week. Ms. Kitts sold total of 110 CDs over the 2 weeks. Which system of equations can be used o find l, the number of CDs she sold last week, and t, the number od CDs she sold this week?
Mathematics
1 answer:
lianna [129]3 years ago
8 0
60 because she sold a total of 110
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Calculate the sample standard deviation of data from Question 1<br> 76,45,64,80,92
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Answer:

S.D = 15.98

Step-by-step explanation:

Given: 76,45,64,80,92

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We start by calculating the mean

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

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Mean = \frac {76+45+64+80+92}{5}

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Determine the absolute value of the above result

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Square Individual Result

4.6^2 = 21.16 \\26.5^2 = 702.25\\7.4^2 = 54.76\\8.6^2 = 73.96\\20.6^2 = 424.36

Calculate the mean of the above result to give the variance

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Mean = \frac{21.16 + 702.25 + 54.76 + 73.96 + 424.36}{5}\\Mean = \frac{1276.49}{5}\\Mean = 255.298

Hence, Variance = 255.298

Standard Deviation is calculated by \sqrt{Var}

SD = \sqrt{255.298}

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