Answer: Rational
Step-by-step explanation:
21
is rational because it is
times 21 which is 65.9734457254 and numbers that terminate or repeat are rational.
Hi! so you didn’t let us know which side length is missing and it kind of matters so i’ll attach an image so you can just copy the one that looks most like yours.
Answer:

Step-by-step explanation:
Factoring
results in 
Answer:
3. solid , liquid
4. respiratory
I only know these two answers and I'm not sure if it's right
Answer:
Step-by-step explanation:
2