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gogolik [260]
1 year ago
10

Add, using the rule for order of operations if necessary: 15+ [2 + (-4)] + (−9)?

Mathematics
1 answer:
schepotkina [342]1 year ago
8 0

15 + ( - 2) +  - 9 = 13 - 9 = 4

#Goodluck!

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17 1/2 as a decimal ?
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Answer:

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Step-by-step explanation:

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1/2 = 0.5

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2.The number of tickets sold to a play for each showing is 78, 84, 87, 80, 91, 95, and 80.
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Answer:

Min =78

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Max = 95

Now we can calculate the median since the sample size os n =7 the median would be the middle value at the position 4 from the dataset ordered and we got:

Median =84

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Now we can find the quartile 3 we analyze the last 4 values  84,87, 91, 95 and the third quartile would be:

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And finally the 5 number summary would be:

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Step-by-step explanation:

We have the following data given:

78, 84, 87, 80, 91, 95, and 80.

The first step is order the dataset on increasing way and we got:

78, 80,80, 84,87, 91, 95

We can begin finding the minimum value and for this case is:

Min =78

The maximum is :

Max = 95

Now we can calculate the median since the sample size os n =7 the median would be the middle value at the position 4 from the dataset ordered and we got:

Median =84

Now we can find the quartile 1 we analyze the first 4 values  78, 80,80, 84 and the first quartile would be:

Q_1= \frac{80+80}{2}= 80

Now we can find the quartile 3 we analyze the last 4 values  84,87, 91, 95 and the third quartile would be:

Q_3= \frac{87+91}{2}=89

And finally the 5 number summary would be:

Min = 78, Q_1 = 80, Median=84, Q_3 = 89, Max=96

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