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Dmitriy789 [7]
2 years ago
11

Solve for the unknown quantity in each proportion.

Mathematics
1 answer:
Nady [450]2 years ago
7 0

Answer:

D

Step-by-step explanation:

27÷3=9

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Make this the brainliest answer if it helped!
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What is the value of x?
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A researcher decides to split scores on an exam into quartiles. She determines that a score of 64 is at the 25th percentile, a s
allochka39001 [22]

Answer:

Answer : A

Step-by-step explanation:

The given data is 25 th percentile is 64, 50th percentile is 74 and 75 th percentile is 80.

percentage : 25    50   75

  score        : 64    74    80

Median:- The median is obtained by first arranging the data in ascending or descending order and applying the following rule.

If the number of observations is odd, then the median is  observation

(\frac{n+1}{2}) ^{th} term

If the number of observations is even, then the median is  observation and  observations.

(\frac{n}{2}+1) ^{th}

given n=3, middle term is '74'

 In this given data the median is (M) = 74

Interquartile range IQR = median of upper half-median of lower half

                                       = 80-64

                                       = 16

                            IQR = 16

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3 years ago
What property (associative,distributive,communitive) is 9(6+4)=(9x6)+(9x4)
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That is distributive property ... hope this helps
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