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lutik1710 [3]
3 years ago
9

I have no clue what the answer to this is .

Mathematics
1 answer:
solong [7]3 years ago
6 0
Arrange the numbers in order from smallest to largest:
12, 18 , 25, 26 , 30, 31 , 34

Find the highest and lowest numbers, those would be where the black dots go on the number line.

Lowest number = 12
 Highest number = 34

The line inside the box would be the Median number of the set.
Find the median (  middle value):
 Since there is an odd amount of numbers the median would be the middle number:
 Middle number = 26
 

The graph that has the black dots on 12 and 34 and the line of 26 is the first one


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A.
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B.
3(2x-4)=5x-1 \\&#10;6x-12=5x-1 \\&#10;\boxed{11x-12=-1} \Leftarrow \hbox{the first mistake} \\&#10;11x=11 \\&#10;\boxed{x=11} \Leftarrow \hbox{the second mistake}

Megan's solution isn't correct.
The first mistake: she subtracted 5x from the right-hand side of the equation, but added 5x to the left-hand side.
The second mistake: she divided the right-hand side of the equation by 11, but didn't divide the left-hand side.

The correct solution:
3(2x-4)=5x-1 \ \ \ \ \ \ \ \ \ \ \ |\hbox{expand the bracket} \\&#10;3 \times 2x+3 \times (-4)=5x-1 \\ 6x-12=5x-1 \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\hbox{subtract 5x from both sides} \\&#10;x-12=-1 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  |\hbox{add 12 to both sides} \\&#10;x=11
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