smartschool08 smartschool08
  • 19-05-2019
  • Mathematics
contestada

Find the value of x in each case.

Find the value of x in each case class=

Respuesta :

19allenethm
19allenethm 19allenethm
  • 19-05-2019

Answer:

x=11

Step-by-step explanation:

Due to angles DCA and CAB being Alternate Interior Angles, we know that they will be equal. This means that

[tex]DCA=33[/tex]°

Next, we can find the measure of the angle DCE.

Angles BCE and BCA are supplementary. This means that they will add together to be 180°

This means that 180-BCE=BCA

Which means [tex]BCA=180-5x[/tex]

As all of the angles in a triangle must add together to be 180 degrees, we can set up the following equation

[tex]33+180-5x+2x=180\\213-3x=180\\3x=33\\x=11[/tex]

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