
Differentiate both sides wrt
:

By the chain rule, we get


Solve for
:


Answer:
there is a lot of solutions here is some guidance. so if there are more then 4 and less then 10 then every solution should equal 5, 6, 7,8, and 9. also it says the number of pencils is more then the number of pens so for example if it was to equal 9 i would put 5 + 4 . 5 is the number of pencils, 4 is the number of pens or i could put 6 + 3 so any numbers that equal to what i said; 5, 6, 7,8, and 9. good luck!
Step-by-step explanation:
Answer:
23
Step-by-step explanation:
is the answer to the problem
Answer:
thank you <3 I needed this.
Step-by-step explanation:
who's cutting onions??!?!?