Respuesta :

Answer:

[tex]x=45[/tex]

Step-by-step explanation:

The angle sum of a pentagon is 540°

Using this and the angles we know, we can create an equation.

[tex]90+148+112+x+3x+10=540 \\ \\ 360+4x=540 \\ \\ 4x=180 \\ \\ x=45[/tex]

Answer:

The value of x is 45

Step-by-step explanation:

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