Carrington used 3/4 of the 1/2 of an hour allotted for an exam to do the first 3 problems. how much time does he have left for the remaining part of the exam?

left for the remaining part of the exam.

Step-by-step explanation:  Given that Carrington used of the of an hour allotted for an exam to do the first 3 problems.

We are to calculate the time that he has left for the remaining part of the exam.

We have

Total time used i the first three problems is given by

Therefore, the time left to complete the remaining part of the exam will be

Thus, left for the remaining part of the exam.

look in attachments

step-by-step explanation:

a = (-2, 0)

b= (-4, 0)

c = (-5,2)

d = (-1,2)