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Lines $l$ and $m$ are parallel and points $A$, $B$, and $D$ are collinear. What is the value of $x$?

 Mar 26, 2020
 #1
avatar+111330 
+1

The  angle  measuring (5x    - 8 )°  is supplemental to 143°

 

Therefore

 

(5 x - 8)   +  143   = 180

 

5x  + 135    = 180

 

5x   =  180  - 135

 

5x =  45     divide both sides  by  5

 

x  =  9

 

 

 

cool cool cool

 Mar 26, 2020

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