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kaheart [24]
4 years ago
9

I need to know this plz and thank u

Mathematics
2 answers:
Nat2105 [25]4 years ago
8 0
The third option is correct. Hope this helps!
mr_godi [17]4 years ago
3 0
The third one :) I hope I did it right
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The mean of the data set(9,5,y,2,x)is twice the data set (8,x, 4,1,3).What is (y-x)
pantera1 [17]

Answer:

y - x = 16

Step-by-step explanation:

<u><em>Explanation</em></u>:-

<u>Step(i)</u>:-

Given data set A  is  9,5,y,2,x

<em>Mean of the Data set A </em>

<em>                          =   </em>\frac{9 + 5 + y + 2 +x}{5}<em></em>

<em>                          = </em>\frac{16 +x+y}{5}<em></em>

<em>Given data set B is 8, x, 4, 1, 3</em>

<em>Mean of the Data set B </em>

                         =   \frac{8+ x+4+1+3}{5}

<u><em>Step(ii):-</em></u>                          

<em>Mean of the Data set A  = 2 X Mean of the Data set B </em>

<em>               </em>\frac{16 +x+y}{5} =  2 X \frac{16+x}{5}<em></em>

<em>On simplification , we get</em>

           16 +x + y = 2( 16 +x)

           16 + x + y = 32 + 2 x

            16 + x + y - 32 - 2 x = 0

            y - x -16 =0

           y - x = 16

5 0
3 years ago
12% of the books in the public library are mathematic books if there are 90,000 books in the library find the number of mathemat
Sergio039 [100]

12/100 = x / 90000, x = 12*90000/100 = 10800 mathematics book

8 0
4 years ago
Determine if true:<br> 10x3-20=20
nexus9112 [7]

Answer:

False

Step-by-step explanation:

10x3=30

30-20=10

10=20

These equations dont match.

Hence, the equation is false

4 0
3 years ago
Read 2 more answers
Natalie added 20 pieces of candy to a bowl. Two days later, half of the candy in the bowl is gone. If there are 14 pieces left i
Salsk061 [2.6K]

Answer:

8 pieces of candy

Step-by-step explanation:

Take the original amount of candy in the bowl to be x.

It says that 20 pieces of candy were added, therefore there are x+20 pieces of candy in the bowl.

Half of the candy is gone, therefore \frac{x+20}{2} pieces of candy are left in the bowl.

After half of the candy is gone, there are 14 pieces left, so we can say that \frac{x+20}{2} =14

Solve for x:

x+20 = 28

x=8

8 0
3 years ago
Out of 28 teenagers and adults, people, 12 adults attended a music concert. what is the ratio of teenagers to attendees?
Naddika [18.5K]

Answer:

I believe it would be 14 to 28

5 0
2 years ago
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