Answer:
[tex]19. \: is \: option \: D \to \boxed{x= 7 }\\
20. \: is \: option \:D\to \boxed{x= 7 }[/tex]
Step-by-step explanation:
[tex] \boxed{part \: 19.} \\ both \: angles \: are \:c ugruent \: so \to \\ m\angle2 = 180 - (56 + 45) \\ 9x + 13 = 180 - 104 \\ 9x = 63 \\ \boxed{x = 7} \\ .............. \\ \\ \boxed{ part \: 20.} \\ 180 -( (90 - 36) + 36) = m\angle2 \\ 180 - 90 = x + 83 \\ x = 90 - 83 \\ \boxed{x = 7} \\ ..............[/tex]
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