Finding x in Parallel Lines Geometry Problem

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Homework Help Overview

The problem involves finding the value of x in a geometry context where two lines, L1 and L2, are parallel. The original poster presents a set of angle relationships and a series of answer choices that include degrees and minutes.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to solve for x using angle relationships but expresses confusion regarding the inclusion of minutes in the answer choices. Other participants share similar results and question the validity of the provided answers, suggesting potential errors in the source material.

Discussion Status

The discussion is ongoing, with participants exploring the possibility of errors in the problem statement or answer choices. Some suggest that there may be a typo in the problem setup, while others express skepticism about the reliability of the source material.

Contextual Notes

Participants note the unusual format of the problem and the potential for errors in the textbook or source from which it originates. There is a general sense of uncertainty regarding the accuracy of the problem and its answers.

david3305
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Homework Statement


Find x. L1 and L2 are parallel

ex79.png

choices:
a)2°40'
b)2°30'
c)2°45'
d)2°15'
e)2°20'

Homework Equations


Σleft∠ = Σright∠

The Attempt at a Solution


2x+1+4x-1+4x-1 = 2x-1+2x+4+3x+2
10x-1=7x+5
3x=6
x=2°

Not sure how the answers include minutes '

Maybe I'm overlooking something?
 

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I get the same result. Maybe an error in the book.
 
Yeah, that's what I think too. I'll leave this open just in case anybody has anything to add. Maybe another way of solving?
 
Quite possibly they made a typo when labelling the figure. You might be able to make a simple change to one of the coefficients or constants in the diagram to have it give their desired answer. :smile:
 
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Is this for real? I've seen other problems with a similar sort of handwriting style, and wrong answers which are said to be from the mysterious "book." So what exactly is the "book?" and why do people post this sort of thing? Sorry if I am too cynical, but I could almost believe this is some kind of joke.
 
Lol. I felt doubt about this because most of the problems i have solved had a correct answer in the choices.
 

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