Answer:
If two angles are not complementary, then their angles add up to 180 degrees.
Step-by-step explanation:
Answer:
Step-by-step explanation:
Answer:
m<A=40°
m<B=55°
m<C=85°
Step-by-step explanation:
Add up all the angles to equal 180 because all triangles add up to 180.
(2x+5)+(x+15)+x=180
Simplify.
4x+20=180
Solve for x.
x=40.
Plug x into the equations. Hope this helps.
(1,3). Is an ordered pair that is a solution.
Or
(2,-3)
I'm struggling to remember this stuff. But I believe the answer is none.
If X = ∅ (the empty set) then ∅ is not a proper subset of X.