vibinmichyy vibinmichyy
  • 09-07-2021
  • Mathematics
contestada

I need help please it’s for math

I need help please its for math class=

Respuesta :

KurdishPotato
KurdishPotato KurdishPotato
  • 09-07-2021

Answer:

139

Step-by-step explanation:

Since the given is a parallelogram then angle <D and angle <B are equal angles

10x - 21 = 9x - 5

10x - 9x = 21 - 5

x = 16 replace x with 16 to find the measure of angle <B

16*9 - 5 = 139

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