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Kazeer [188]
3 years ago
6

the observation of an underground data in their ascending order are 12,15,X,19,28. if the median of the data is 18 find the valu

e of x​
Mathematics
1 answer:
Annette [7]3 years ago
3 0

Answer:

The value of x = 18

Step-by-step explanation:

Given the data set

12,15,x,19,28

  • Given that the median of the data is 18.
  • We know that the median is the middle number in a data set when the data points are in ascending order.

As the given data is already in ascending order.

  • Please observe that the data set has an odd number of data points, meaning that the middle number is the median of the data is 18.

As 'x' is the middle number, thus it represents the median value.

Therefore, the value of x = 18

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What is equivalent ratio of 5:8:4 and explain how u got it
igor_vitrenko [27]

this is example

So, first we need to write the given ratio as fraction,

= 8/18

= (8 × 2)/(18 × 2)

= 16/36

= 16 : 36 (one equivalent ratio),

So, 16 : 36 is an equivalent ratio of 8 : 18.

Now we will find another equivalent ratio of 8 : 18 by using division.

Similarly, first we need to write the given ratio as fraction,

= 8/18

= (8 ÷ 2)/(18 ÷ 2)

= 4/9

= 4 : 9 (another equivalent ratio)

So, 4 : 9 is an equivalent ratio of 8 : 18.

Therefore, the two equivalent ratios of 8 : 18 are 16 : 36 and 4 : 9.

2. Frame two equivalent ratios of 4 : 5.

Solution:

To find two equivalent ratios of 4 : 5 we need to apply multiplication method only to get the answer in integer form.

First we need to write the given ratio as fraction,

= 4/5

= (4 × 2)/(5 × 2)

= 8/10

= 8 : 10 is one equivalent ratio,

Similarly again, we need to write the given ratio 4 : 5 as fraction to get another equivalent ratio;

= 4/5

= (4 × 3)/(5 × 3)

= 12/15 is another equivalent ratio

Therefore, the two equivalent ratios of 4 : 5 are 8 : 10 and 12 : 15.

Note: In this question we can’t apply division method to get the answer in integer form because the G.C.F. of 4 and 5 is 1. That means, 4 and 5 cannot be divisible by any other number except 1.

6 0
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