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iogann1982 [59]
3 years ago
9

8+4(s-4t) simplify the expression. HELP, 20 POINTS

Mathematics
1 answer:
ella [17]3 years ago
5 0
8+ 4s -16t= 4 (2+s-4t)
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If you wanted to graph the point (2.5, 1.5) what would you<br>do?​
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Four boys went to the amusement park. They paid $123 altogether to get into the park. About how much did each boy pay?
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30.75

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3 years ago
Find the population mean or sample mean as indicated. Sample: 19, 15, 6, 11, 24 Compute the sample mean for this data set. Selec
yKpoI14uk [10]

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\overline{x}=15

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the mean is given by:

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side note: the main difference between sample mean and population mean is in the 'context'. However, the method to calculate them is the same.

By context I mean: if this the items are taken from some larger category for example: the ages of a few 'students' from a 'class'. Here 'students' are the sample from a larger set that is 'class'. The mean of the 'few students' will be called sample mean. In contrast, if we take the mean of the ages of the whole class then this is called population mean. (population mean == mean of the whole set)

In our case we aren't told exactly where these numbers come from, is this the whole set or a sample from it, the lack of context allows us to assume that the mean can either be population mean or sample mean. So we can safely use any symbol \mu or \overline{x}.

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3 years ago
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