Answer:
A. Concentration gradient must exist.
Step-by-step explanation:
Answer:
8z
Step-by-step explanation:
Since these are like terms, add the numbers together and then put the z on.
So you multiply 13 by each variable and it’s coefficient.
13n+52+91m
Answer:
11 + 10i
Step-by-step explanation:
Just treat i like any other variable, and combine like terms. Hope that helps!
Give more points, please.