Answer:
123°
Step-by-step explanation:
Supplementary angles add up to be 180 degrees.
This means angles A and B will add up to be 180 degrees.
We can find the measure of angle B by subtracting 57 from 180
180 - 57
= 123
So, the measure of angle B is 123 degrees
Answer:
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The answer is b hope this helps
You're looking for c, so you want to isolate it or get it by itself. To get rid of the /3 you multiply since the opposite of division is multiplication and to get rid of it, you do the opposite (like -9 you would add 9 to get it to 0). Now you are left with -19+c = 24 (the 24 is 8*3 because what you do to one side you do to the other. Now you get c by itself so you add 19 to both sides which leaves you with C= 43. Sorry if this was confusing!