What is the angle of B

Mathematics

1 answer:

Charra [1.4K]3 years ago

5 0

Y-9 + y/2 = 180
Add nine to each side
y+y/2=189
Multiply each side by two
2y+y=378
Add the y's together
3y=378
Divide it all by three
y=126

so, Angle B is 126 degrees

I hope that helps!

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