+0  
 
0
259
3
avatar+128 

Solve for x.

 

Acceptfully  Nov 21, 2017
 #1
avatar+88980 
+2

This triangle is equilateral....so....all sides and angles are equal

 

So

 

2y  = 25x - 15    add 15 to o both sides

 

2y + 15   =  25x     divide both sides by 25

 

[ 2y + 15 ] / 25    = x

 

 

cool cool cool

CPhill  Nov 21, 2017
 #2
avatar+128 
+1

So, it would be 27.5? 

Acceptfully  Nov 21, 2017
 #3
avatar+88980 
+3

Sorry.....If you want a numerical answer... note that all the angles = 60°....so.....

 

25x - 15  =  60     add 15 to both sides

 

25x  =  75      divide both sides by 25

 

x  = 3

 

 

cool cool cool

CPhill  Nov 21, 2017

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