Answer:
D)graph c
Step-by-step explanation:
it's my opinion do not take it as important
Answer:

Step-by-step explanation:
cot(-11pi/6)=cot(-pi-5pi/6)= -cot(5pi/6)=cot(pi/6)=
≈1.73
Answer:
C
Step-by-step explanation:
-1.5x=-2.55
1.5x=2.55
x=2.55/1.5
x=1.7
it is a rational number (intergers are plus and minus whole numbers)