Answer:
-2 friend me plz
Step-by-step explanation:
The first one is 2x+y=-1
the second one is 13x+2y-1=0
This is simple, what is the total degree of a triangle? 180
so add up 70 + 30 is 100, the answer to x is 80
Answer:
65 degrees
Step-by-step explanation:
A triangle has all three angles add up to 180 degrees.
34 + 81 + x = 180 degrees
115 + x = 180
x = 180 - 115
x = 65 degrees
Answer:
526.5
Step-by-step explanation: