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erastovalidia [21]
3 years ago
15

1/5 is equivalent to what fractions

Mathematics
2 answers:
otez555 [7]3 years ago
6 0
2/10 or 3/15 or 4/20
Llana [10]3 years ago
6 0
Skip count fives and those are your denominators the numerator is one
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Perform the indicated operations. x+1/3y+x-2/4y-x=3/6y
Varvara68 [4.7K]
The answer: 
_____________________________________________
x = (⅔)y ;

 y = 3x/2.
_____________________________________________
Given:

x + (⅓)y + x - (2/4)<span>y - x = (3/6)y ;
______________________________________ 
</span>
Take  the:  x + x - x = 1x + 1x - 1x = 2x - 1x = 1x = x ; 

and rewrite:

x + (⅓)y - (2/4)y = (3/6)y ;
_______________________________
 Note that:  (2/4)y = (<span>½)y ; 

        and:   (3/6)y = (</span><span>½)y ;  so;
___________________________
Rewrite as:
____________________________
</span>x + (⅓)y - (½)y = (½)y ;

Add "(½)y" to EACH SIDE of the equation;
_________________________________
    x  +  (⅓)y  -  (½)y  + (½)y = (½)y + (½)y ;

to get:  x +  (⅓)y = y ; 

x = 1y - (⅓)y = (3/3) y - (1/3)y - [ (3-1)/3] y = (⅔)y ; 

So:  x = (<span>⅔)y ;

In terms of "y" ; 

Given:  </span>(⅔)y = x ; Multiply each side of the equation by "3" ; 

3*[(⅔)y] = 3*x ;
 
 to get:  2y = 3x ;

Now, divide EACH SIDE of the equation by "2" ; to isolate "y" on one side of the equation; and to solve for "y" (in terms of "x"):

     2y / 2 = 3x / 2 ;

to get:  

      y = 3x/2 ;
___________________________________

6 0
4 years ago
A class has 40 students. The teacher asks how many students in the class have siblings and finds 3/10 of the students have sibli
leva [86]

Answer:

12 students

Step-by-step explanation:

First, find the percentage of how many students have siblings:

3/10 = 0.3 = 30%

40 * 0.3 = 12

This means that 30% of this class are 12 students. These 12 students have siblings.

Hope this helps!

6 0
3 years ago
Please help. Sooooo yeah
Bingel [31]

Answer:

1.

2.

3.

4.

5.

6.

Step-by-step explanation:

8 0
3 years ago
A simple random sample of 144 observations was taken from a large population. The sample mean and the standard deviation were de
Vera_Pavlovna [14]

Answer:

The standard error of mean = 10

Step-by-step explanation:

Given a simple sample of 144 observations was taken from a large population.

The size of large sample 'n' = 144

Given sample mean and the standard deviation were determined to be 1234 and 120 respectively.

Given standard deviation of sample (S)  = 120

The standard error of mean is determined by

                                                SE (X^{-} ) = \frac{S.D}{\sqrt{n} }

                                              SE (X^{-} ) = \frac{120}{\sqrt{144} } = 10

<u>Final answer</u>:-

The standard error of mean = 10

4 0
3 years ago
Help please!!!<br> √−100 = + i
Semmy [17]

Answer:

\sqrt{-100}=10i

Step-by-step explanation:

If you're asking what is \sqrt{-100}:

\sqrt{-1}\sqrt{100}\\\sqrt{100}i\\10i

Otherwise, \sqrt{-100}=i is not true.

3 0
4 years ago
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