My Math Forum Solve for the Value of a Line Segment

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September 21st, 2017, 09:10 PM   #1
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Solve for the Value of a Line Segment

Hi everyone,

Can anyone point me in the right direction with this problem? It would be greatly appreciated!

In the image provided, points A, B, C, D, and E are collinear. AB = 2x + 4, BC= 3x -12, CD= 2x + 4, DE = 5x -21, and AE = 119. Show your work and explain the steps used to solve for the value of DE.

I have attached an image of the line.

Thanks!
Attached Images
 Geometry_Exam1_10.png (16.0 KB, 2 views)

September 21st, 2017, 09:41 PM   #2
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Quote:
 Originally Posted by Indigo28 Hi everyone, Can anyone point me in the right direction with this problem? It would be greatly appreciated! In the image provided, points A, B, C, D, and E are collinear. AB = 2x + 4, BC= 3x -12, CD= 2x + 4, DE = 5x -21, and AE = 119. Show your work and explain the steps used to solve for the value of DE. I have attached an image of the line. Thanks!
really? Just add up all the segments to get 119

$(2x+4)+(3x-12)+(2x+4)+(5x-21) = 119$

$12x -25 = 119$

$12x = 144$

$x=12$

September 21st, 2017, 09:49 PM   #3
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Quote:
 Originally Posted by romsek really? Just add up all the segments to get 119 $(2x+4)+(3x-12)+(2x+4)+(5x-21) = 119$ $12x -25 = 119$ $12x = 144$ $x=12$
Uhm yes, really. Lol. I wanted to make sure I was on the right track before I continued with the question, so I posted the math question on the math forum 0_o.

Anyway, thank you! It was apparently simpler than I was making it out to be.

 Tags line, segment, solve

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