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Ann [662]
3 years ago
6

Sebastion also completed the math problem, but his time is not on the timeline plot. When Sebastion's time is placed on the line

plot, the total time for all of the students combined will be 8 minutes. How many minutes did it take Sebastion to complete the math problem? Explain how you found your answer.
Mathematics
1 answer:
Alla [95]3 years ago
4 0
Can you show me the timeline plot?
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-3x-y=-17 4x + 2 y equals 20
ExtremeBDS [4]
-3x - y = -17
4x + 2y = 20

multiply one part of the equation so that we can be able to use the process of elimination.

(-3x - y = -17)2
4x + 2y = 20

Now we have:

-6x -2y = - 34
4x+2y= 20
------------------------
-2x = -14

Divide -2 on both sides.

-2x = -14
/-2       /-2

x = -7.


=============================================

To solve for y, we just have to substitute the value of x to any of the equation given above, that we feel comfortable with. And I'm going to choose this equation: 4x + 2y = 20


4x + 2y = 20

4(-7) + 2y = 20

-28 + 2y = 20

Add 28 on both sides

-28 + 2y = 20
+28          +28
---------------------
2y = 48
/2      /2

y = 24.


The last thing you would do is to check if the answers is correct.
All you have to do is plug in the values of x and y into both equations and see if they equal to one another.

You may have to do this by yourself :P

Anyways, if you have any questions about this topic, feel free to PM me or any other users interested. Thank you for being part of Brainly! Have a nice day!










4 0
3 years ago
a train travels 120 miles in 1 1/2 hours. At this rate how many miles will the train travel in 6 hours
Morgarella [4.7K]

Answer:

480 miles

Step-by-step explanation:

120/1.5=80

80*6=480

6 0
3 years ago
Read 2 more answers
3. Merrick walked 5.5 miles to his friend's house. He left his house at 9 a.m. and arrived at his friend's
Delicious77 [7]

Answer:

B. 2.75 mph

Step-by-step explanation:

If it took him 2 hours to walk 5.5 miles, 5.5 ÷ 2 = 2.75, which is what he walked in a single hour, meaning he was walking 2.75 mph

5 0
3 years ago
I need help on this question
Paul [167]
9P2 =72

= 9!/ (9-2)!
4 0
3 years ago
What is 4,069.44 rounded to the nearest hundredth
dangina [55]
The answer would be 4,069.40
8 0
3 years ago
Read 2 more answers
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