Answer:
First i do not know sorry please help me
Step-by-step explanation:
It's dependent on the context. A book may ask you to find the f'(x) of a function and you may have to use a u sub in your problem which requires you to find the dy/dx of what you substitute. So in this case both would be used.
I only know B
Answer
X= 1 over 7 hj + 27 over 7
(6/13)/(6/12)= (6/13)*(12/6)= 12/13
This rule for division applies to all fraction divisions
The answer is A! hope this helps! please brainliest!
