Respuesta :

we are given

angle(ADC)=135

angle(ADB)=7x

angle(BDC)=11x+9

we know that

angle(ADC)=angle(ADB)+angle(BDC)

now, we can plug values

and we get

[tex]135=7x+11x+9[/tex]

now, we can solve for x

[tex]135=18x+9[/tex]

[tex]126=18x[/tex]

[tex]x=7[/tex]

now, we can find angle

angle(BDC)=11x+9

we can plug x=7

angle(BDC)=11*7+9

angle(BDC)=86...................Answer


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