Respuesta :

Answer:

x=18

m∠A=110°

Step-by-step explanation:

∠A and ∠B are supplementary

[tex]5x+20+9x-92=180\\14x-72=180\\14x-72+72=180+72\\14x=252\\x=18[/tex]

plug in 18 for x

[tex]5x+20\\5(18)+20\\90+20\\110[/tex]

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