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the problem IS "25,n,12,12,9,17,and 12 if the range is 21, and the median is 12, WHAT'S N?

2007-09-24 13:58:33 · 9 answers · asked by Sohotz 2 in Science & Mathematics Mathematics

9 answers

Ok, knowing the range is 21. Our highest number is 25
so 25 - n = 21 or n-9 = 21
so n is either 4 or 30
so lets line it up, trying 4 first
4, 9, 12, 12, 12, 17, 25
median is 12
so 4 works

lets try 30
9, 12, 12, 12, 17, 25, 30
so 30 works


so n either is 4 or 30

2007-09-24 14:03:52 · answer #1 · answered by leo 6 · 1 1

4

2007-09-24 14:03:37 · answer #2 · answered by Anonymous · 0 0

4

2007-09-24 14:04:46 · answer #3 · answered by Anonymous · 0 1

Arrange the values in order.
9,12,12,12,17,25,n. We don't know where n lies.
median is the middle value when the values are in order. If the median is 12, n can be anything above 25 or 25 as 12 is the middle value. it is 30. n is 30. the median is 12.
range= maximum value - minimum value
range=maximum - 9
if range is 21 , maximum is 30.
n = 30
range = 30-9 =21
median = middle value (values are in order)

2007-09-24 14:10:47 · answer #4 · answered by cidyah 7 · 0 0

range is high - low. if 25 is high, 25 - 21 = 4, and n is 4, and your data are
4, 9, 12, 12, 12, 17, 21.

but if 9 is low, 9 + 21 = 30, and n = 30, and your data are
9, 12, 12, 12, 17, 21, 30.

you have 12 as median in both cases.

2007-09-24 14:07:02 · answer #5 · answered by Philo 7 · 0 0

range is max value minus min value
median is middle number

so first put the numbers you have in order

9,12,12,12,17,25

25(max) - 9(min) = 16
so your range is wrong, you need either a number 21 more than 9 or 21 less than 25

since 12 also needs to be the middle value (aka fill position number 4) both situations work.

4,9,12,12,12,17,25
or
9,12,12,12,17,25,30

2007-09-24 14:10:02 · answer #6 · answered by CJ 3 · 0 0

The answer is 4. If the range is 21 that must mean 25-_. Which would be four.

Hope I Helped!!

2007-09-24 14:03:54 · answer #7 · answered by i LoVe To HuG<3 2 · 0 2

hi Vertex attitude is A Base angles are B and C by using fact the triangle is isocel, B = C The sum of the three angles is one hundred eighty° A = B+15° B = B C = B B+15° + B + B = one hundred eighty° 3B + 15° = one hundred eighty° 3B = one hundred sixty five° B = fifty 5° C = fifty 5° A = 70° wish it helps Bye !

2016-12-17 09:29:58 · answer #8 · answered by Anonymous · 0 0

I would say 4, it might be wrong.

2007-09-24 14:05:09 · answer #9 · answered by Ta-Dah! 1 · 0 0

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