+0  
 
0
332
1
avatar+110 

What is the value of x?

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What is the value of x?

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https://prnt.sc/hxqb2o

 

What is the value of x?

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What is the value of x?

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Severoth  Jan 8, 2018
 #1
avatar+91099 
+2

First one :

 

VY  / VT   =  KY  / KT

 

VY / 57  =  68 / 129.2         Multiply both sides by 57

 

VY  =   57 * 68  / 129.2  =   30

 

So.....

 

 x =  KY + VY  =  68  +  30  =   98 units

 

 

Second one :

 

Note that   MA  =  MN - AN  =  67.2  - 32   =    35.2

 

So

 

MA / MN   =  MB / MP

 

35.2  /  67.2   =   MB  / 81.9       mutiply both sides by 81.9

 

81.9 * 35.2 / 67.2  = MB  =  x   =  42.9

 

 

 

 

Third one :

 

62 / 99.2   = [ x + 2 ] / 112    cross-multiply

 

112 * 62   =   99.2  [ x + 2]      simplify

 

6944  =  99.2x  +  198.4          subtract 198.4 from both sides

 

6745.6  =    99.2x          divide both sides by 99.2

 

68  =  x

 

 

 

Last one :

 

[3x - 20 ]  / 56   =  9 / 72

 

[ 3x  - 20] / 56    =   1  / 8        cross-multiply

 

8 [ 3x - 20 ]     =   56

 

24x -  160   =  56       add 160 to both sides

 

24x  =  216           divide both sides by 24

 

x  = 9

 

 

cool cool cool

CPhill  Jan 8, 2018

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