+0  
 
0
104
3
avatar+273 

Help please! Both !!

LaughingFace  Apr 9, 2018
 #1
avatar+428 
0

#1 is propably a and #2 is propably b

jakesplace  Apr 9, 2018
edited by jakesplace  Apr 9, 2018
 #3
avatar+428 
0

woops #2 is a

jakesplace  Apr 9, 2018
 #2
avatar+89729 
+2

We have the following relationship

 

 ΔPQR  similar to  ΔQTR  similar to  ΔPTQ

 

Note  that

 

PT            QT

___   =     ___

TQ            TR

 

So... "A"  is correct

 

 

 

We  have  that

 

16             x

___   =    ___      cross-multiply

  x             9

 

16 * 9  =  x^2

 

144 = x^2     take the positive root of both sides

 

12  =  x

 

 

cool cool cool

CPhill  Apr 9, 2018

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