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DerKrebs [107]
3 years ago
14

Name the rational numbers from the list below -9,0,8,4.19, square root of 7, square root of 4, 4 1/2, -4/5, 1.1616616661

Mathematics
1 answer:
Liula [17]3 years ago
7 0
A rational number can be turned into a fraction

-9...rational number
0..rational number
8..rational number
4.19...rational number
sqrt 7....not rational
sqrt 4...rational
4 1/2...rational
-4/5...rational
1.1616616661 (if this is never ending)....not rational
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Ymorist [56]

Answer:

2/5

Step-by-step explanation:

make it reciprocal

2x/5 = 4/25

cross multiply the numbers

2x × 25 = 4×5

2x= 20/25

2x= 4/5

x = 2/5

4 0
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What is the missing numerator? blank over five plus eighteen over twenty equals thirty over twenty 8 5 3 2
Oliga [24]

Given:

\dfrac{?}{5}+\dfrac{18}{20}=\dfrac{30}{20}

To find:

The missing value.

Solution:

Let x be the missing value.

We have,

\dfrac{x}{5}+\dfrac{18}{20}=\dfrac{30}{20}

\dfrac{x}{5}+\dfrac{9}{10}=\dfrac{3}{2}

Subtract \dfrac{9}{10} from both sides.

\dfrac{x}{5}=\dfrac{3}{2}-\dfrac{9}{10}

\dfrac{x}{5}=\dfrac{15-9}{10}

\dfrac{x}{5}=\dfrac{6}{10}

\dfrac{x}{5}=\dfrac{3}{5}

Multiplying both sides by 5, we get

x=3

So, the missing value is 3.

Therefore, the correct option is C.

8 0
3 years ago
How to solve this algebraically?
Keith_Richards [23]
Ok so x+4-1 makes x-1 so i belive the answer could be 1/5 
7 0
3 years ago
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