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ki77a [65]
3 years ago
10

A pair of 120 shoes was discounted 20 percent a costumer had a coupon for an additional 5 off what was the final price of the sh

oes ?
Mathematics
1 answer:
STatiana [176]3 years ago
8 0

Answer:

The final price of the shoes is $91.20.  

Step-by-step explanation:

In order to find the final price of the shoes, we need to calculate each discount separately.  Since the initial cost of the shoes is $120, we need to first find the cost after the 20% discount.  If the shoes are discounted 20%, then we can find the cost by multiplying the original amount by 80%, or 0.8:  $120 x 0.80 = $96.00.  Since the customer also has an additional 5% off with the coupon, we can then take the new total, $96.00, and multiply by 95%, or 0.95, to get the final cost:  $96.00 x 0.95 = $91.20.  

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Answer:

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Step-by-step explanation:

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1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 7.

Data set 2:  

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1. The mean of data set 1 is greater than the mean of data set 2.

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\text{Mean of data set 2}=\frac{1+1+1+1+1+2+2+2+2+2+2+2+2+3+3+3+4+4}{18}

\text{Mean of data set 2}=\frac{38}{18}

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We can see that mean of data set 1 is greater than mean of data set 2, therefore, 1st statement is true.

2. The mean of data set 1 is equal to the mean of data set 2.

Since mean of data set 1 is greater than mean of data set 2, therefore, 2nd statement is false.

3. The median of data set 1 is greater than the median of data set 2.

Since data set 1 has 19 data points, so median of data set 1 will be value of 10th data set, that is 2.

Our data set 2 has 18 data points, so median of data set 2 will be the average of 9th and 10th data points.

\text{Median of data set 2}=\frac{2+2}{2}

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Since median of data set 2 is also 2, therefore, 3rd statement is not true.

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Since both data set's median is 2, therefore, 4th statement is true.

5. The standard deviation of data set 1 is smaller than the standard deviation of data set 2.

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\text{IQR of data set 2}=3-1=2

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