5 1/3 is 16/3 because 16/3 is 5 and then 5x3 is 15 so u have one left
25m+20m is 45
so do 90-45 and you’ll get 45
to check your answer you can do 45+25+20 which gives you 90
The Correct answer is A. i hope this helps :)
Answer:

Step-by-step explanation:
The current function of time is defined as follows:

where
is the charge function.
For the given charge function of time
we have the following current function:

In the problem it is proposed that
.
Examining the expression of
we obtained by deriving
with the expression proposed by the problem and comparing term by term:

We conclude that
and
.
Answer:
look it up :)
Step-by-step explanation:
:)