Answer:
Supplementary
Step-by-step explanation:
135+45 =180
So Option C
Answer:
2n+7
Step-by-step explanation:
1)
LHS:

LHS = RHS. So, the statement is true
2)
LHS:

LHS not equal to RHS. So, the statement is false
3)
LHS:

LHS = RHS. So, the statement is true.
4)
LHS:

LHS = RHS. So, the statement is true.