Answer:
A
Step-by-step explanation:
Its simple
Answer:
-1
Step-by-step explanation:

= 
= 
= -1
Answer:
x=90 degrees
Step-by-step explanation:
It is a right corner. Please give branliest
Answer:
B
Step-by-step explanation:
-7x/\2+x
Answer:
n=18
Step-by-step explanation: