Answer:
a = 70°
b = 80°
Step-by-step explanation:
Angles on a straight line add up to 180°
⇒ a + 110 = 180
⇒ a = 180 - 110
⇒ a = 70°
The sum of the interior angles of a quadrilateral is 360°
⇒ a + b + 130 + 80 = 360
⇒ 70 + b + 130 + 80 = 360
⇒ b + 280 = 360
⇒ b = 360 - 280
⇒ b = 80°
Answer:
(0,-10)
Step-by-step explanation:
not to sure if this is what your asking for, sorry
Answer:
yes
Step-by-step explanation:
Given the 2 equations
y = 
x + 6 → (1)
y = - x + 5 → (2)
Substitute y = x + 6 into (2)
x + 6 = - x + 5 ( add to both sides )
x + 6 = 5 ( subtract 6 from both sides )
x = - 1 ( divide both sides by )
x = 
= - 
← one solution
Answer:
B) 
Step-by-step explanation:
3x + 1 = x - 1
-3x - 3x
___________
1 = −2x - 1
+1 + 1
_________
2 = −2x
_ ___
−2 −2
[Plug this back into both equations above to get the y-coordinate of -2]; 
I am joyous to assist you anytime.
