Afootball match began at 4: 15 and finished at 5: 45 how long did the football match last

1 hour and 30 minutes

Step-by-step explanation:

There is 1 hour between 4 and 5

30 minutes between 15 and 45

if the probability is 1/12, 75 people will receive a $25 gift card

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,