3 years ago

Please help and explain

Mathematics

1 answer:

Montano1993 [528]3 years ago

6 0

Answer:

∠ABD=150°

Step-by-step explanation:

6c+12+51-c=178

5c=178-12-51

5c=178-63=115

c=115÷5=23

∠ABD=6c+12=6×23+12=138+12=150°

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