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Find the value of x in each case.

 

 

 Feb 2, 2021
 #1
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-1

17             x = 2 2/3

 

18             x = 20 1/2

 Feb 2, 2021
 #3
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Corrections to #17: cheeky

 

124 - 2x + 6x = 180

 

4x = 56

 

x = 14  laugh

Guest Feb 2, 2021
 #2
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0

17

Angle CBA  = 180  - 6x

 

So....by the Exterior Angle theorem

 

124  = 2x + 180 - 6x

 

124  -180  =  -4x

 

-56  =  -4x

 

-56/-4 =  x  =    14

 

 

18

 

Angle BAE  = 2x       Angle EBA  =   180   - 6x

 

Again....by the Exterior Angle  theorem

 

4x  =  2x  +  180  - 6x

 

4x  = -4x + 180

 

8x    =180

 

x  =22.5

 

 

cool cool cool

 Feb 2, 2021
edited by CPhill  Feb 2, 2021

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