To convert this you divide the speed by 60 since there's 60 minutes in an hour
125/60 = 2.0833....
Since you round the answer would be
2.1 miles per minute
You cannot combine any the terms because x and y are two different variables. that is the most simplified you can get.
The probability that the student does not know the answer but he randomly guesses it is 0.146025
<h3>How to solve for the probability of having a correct guess</h3>
The question has only one right answer out of 5 choices.
Probability he answers incorrectly:
1 - 0.55 * 4/5
= 0.45 * 0.8
= 0.36
Probability he does not know answer but answers the question correctly

= 0.09/0.55+0.09
= 0.140625
Read more on probability here: brainly.com/question/24756209
If u were to graph that function used u would have to solve it first