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Nadusha1986 [10]
3 years ago
9

22. Find the median of the following set of observations.

Mathematics
2 answers:
andrew11 [14]3 years ago
7 0

Answer:

(i) 80 (ii) 85

Step-by-step explanation:

The median is the middle number in a sorted, ascending or descending, list of numbers.

sort the numbers in the first problem:

50, 60, 70, 80, 90, 100, 110

find the middle:

80

sort the numbers in the second problem:

60, 70, 80, 90, 120, 140

find the middle number:

it's between 80 and 90, which mean that we have to find the average of these two numbers

to find the average add all the values and divide by how many values there are:

(80+90)/2=85

The median for the first set is 80 and the median for the second set is 85

klio [65]3 years ago
6 0
All makes sense pretty sure it is 24
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First in order to solve you need to get rid of the fraction. You can do so by multiplying to entire equation by the denominator like so...

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Is X +3 a factor of 2X squared minus 2X -12
Fantom [35]

Answer: No, x+3 is not a factor of 2x^2-2x-12

========================================================

Explanation:

Let p(x) = 2x^2 - 2x - 12

If we divide p(x) over (x-k), then the remainder is p(k). I'm using the remainder theorem. A special case of the remainder theorem is that if p(k) = 0, then x-k is a factor of p(x).

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Plug x = -3 into the function

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Let's see what happens when we factor p(x)

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The factors here are 2, x-3 and x+2

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Step-by-step explanation:

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