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r-ruslan [8.4K]
3 years ago
11

If you add or subtract two rational numbers, is the result sometimes, always, or never rational?

Mathematics
1 answer:
lawyer [7]3 years ago
8 0

Answer:

Always

Step-by-step explanation:

8 - 9 = -1

1/3 - 1/6 = 1/6   are 2 examples

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1/3n-7/12=-3/8 n=5/72 n=-5/72 n=5/8 n=-2 7/8
prisoha [69]

Given the equation;

\frac{1}{3}n-\frac{7}{12}=-\frac{3}{8}

To solve, let us multiply through by the least common multiple of the the denominator of the three fractions wich is 24;

3 0
1 year ago
What is the mode and mean for class A and the range and medium for class B????
melamori03 [73]
Hello!

First you have to list the data in both classes

Class A
41, 42, 45, 46, 47, 48, 52, 53, 54, 59, 61, 61, 64, 68, 71, 82, 85, 90

Class B
41, 42, 59, 62, 64, 69, 71, 75, 77, 78, 78, 80, 83, 84, 84, 86, 86, 87, 92, 92, 95
------------------------------------------------------------------------------------------------------
First we are going to find the mode and mean of class A

The mode is the number that appears the most

The number that appears the most is 61

The mode is 61

To find the mean you add all the numbers together and divide the sum by the amount of numbers added

41 + 42 + 45 + 46 + 47 + 48 + 52 + 53 + 54 + 59 + 61 + 61 + 64 + 68 + 71 + 82 + 85 + 90 = 1069

Divide this by the amount of numbers added

1069 / 18 = 59.3888...

The mean is 59.3888

The mode is 61 and the mean is 59.39 for class A
------------------------------------------------------------------------------------------------------
We are going to find the range and median for class B

To find the range you subtract the smallest number from the largest on

The smallest number is 41
The largest number is 95

Subtract these

95 - 41 = 54

The range is 54

To find the median you list the numbers from least to greatest and look for the number in the middle

41, 42, 59, 62, 64, 69, 71, 75, 77, 78, 78, 80, 83, 84, 84, 86, 86, 87, 92, 92, 95

The number in the middle is 78

The range is 54 and the median is 78
------------------------------------------------------------------------------------------------------
Hope this helps!
6 0
3 years ago
If f(3)=5 and f(4)=8 what does f(5)= and f(6)=
Novosadov [1.4K]

They will equal 11 and 14 it moves up by 3... Did you know that when you walk you move................................MIND-BLOWN

4 0
3 years ago
Using the segment addition postulate, which is true? A number line going from negative 9 to positive 9. A closed circle appears
MArishka [77]

Answer:

  BC + CD = BD

Step-by-step explanation:

The segment addition postulate tells you that when a segment is divided into two parts, the sum of the lengths of the first part of the divided segment and the second part of the divided segment will be equal to the length of the whole segment.

If point C divides segment BD into BC and CD, then the sum of those two segments will match the whole.

4 0
3 years ago
Read 2 more answers
What is 25/6 times 2
Darya [45]
25/6 converts to 4 1/6 so 
4 1/6 x 2 = 8 1/3 
8 1/3 is your answer :)
6 0
3 years ago
Read 2 more answers
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