Answer:
See below
Step-by-step explanation:
Find angle A by subtracting the others from 180
180 - 81 - 17 = 82
Put in order from least to greatest
Angles: B, C, A
Then the opposite sides will follow the same pattern, so they are
Sides: AC, AB, BC
Answer:
The answer for first one is,

sorry I don't know the answer for second one.
Answer:
y = -1, x = -2
Step-by-step explanation:
First, multiply the top equation by 2 to make 3x become 6x:
6x - 8y = -4
Second, multiply the bottom equation by 3 to make -2x become -6x:
9y - 6x = 3
Add the two equations together, and you get:
y = -1
Plug in y as -1 into the first or second equation:
3x - 4(-1) = -2
OR
3(-1) - 2x = 1
x = -2