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avatar+569 

im not very sure how to solve this

 Feb 21, 2018
 #1
avatar+99586 
+2

7)  The bisected angle  in the first triangle will always set up this relationship

 

10 / 24  =  ?  / 36

 

5/12  = ? / 36        cross - multiply

 

36 * 5  =  12 * ?       

 

180   =  12 * ?      divide both sides by 12

 

15  =  ? 

 

 

8)  Similarly

 

[ 5x - 6 ]  / 42   =  28 / 49

 

[ 5x - 6 ] / 42  =   4 / 7        cross-multiply

 

7[ 5x - 6 ]  =  42 * 4

 

35x - 42  =  168       add 42  to  both sides

 

35x  =  210   divide both sides by 35

 

x  =  6

 

 

cool cool cool

 Feb 21, 2018

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