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babunello [35]
3 years ago
13

A pencil box and a notebook together cost $6.28 the notebook cost $0.70 more than the pencil box . How much does the notebook co

st?
Mathematics
2 answers:
11111nata11111 [884]3 years ago
6 0
Well, if y is the notebook cost, well x+y=6.28, x+x+0.70=6.28, 2x=5.58, x=2.79.
The pencil box costs $2.79, while the notebook costs $3.49.
Ivanshal [37]3 years ago
5 0

Answer:

the note book costs $5.58

Step-by-step explanation:

you take 6.28 - 0.70

hope this helps ;)

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Answer:

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Standard Deviation: 113.6

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Standard deviation: 56.3

Step-by-step explanation:

To calculate the median, we need to organize the price and select the value that is in the middle position.

To calculate the mean, we need to sum all the values and divide them by the number of values

To calculate the standard deviation, we need to square the distances between every price and the mean, sum it all and divide them by the number of values less 1 and finally calculate the square root.

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The standard deviation is:

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median: 380

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3 years ago
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