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Sauron [17]
3 years ago
6

Really Need help please

Mathematics
2 answers:
Virty [35]3 years ago
7 0
1. Add the total ages up and divide that by the number of volunteers, that gives you 130 as the total ages added up and 10 volunteers, which gives you a mean of 13,
2. When the numbers are put in an ascending order 12 and 13 appear to be the middle two, therefore divide the sum of the two to find the median, which is 12.5.
Lostsunrise [7]3 years ago
6 0

Answer:

See below in BOLD.

Step-by-step explanation:

Rearrange in ascending order of age:

11 11 11 12 12 13 14 15 15 16

1. The mean = (11 +11 +11 +12 +12 +13+ 14 +15+ 15+ 16) / 10

= 130/10

= 13 years.

2.  The median is the mean of the middle 2 numbers in the list:

= (12 + 13) / 2

= 12.5 years.

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Solve the following System Of Equations Using Substitution or Elimination Methods. Show Work.
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Step-by-step explanation:

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Rearrange so that one side is equal to 0.

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You may use quadratic formula or any form of factoring to find the zeros (x values that make the equation equal to 0).

a = 1, b = -1, c = -2

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Now that you have your x values, plug them into the equations to find their corresponding y values.

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Pair #2: (-1,4)

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Step-by-step explanation:

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side opposite 90 angle = x \sqrt{2}

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