If 2 students have to share 1 pizza (2/4 + 2/4 = 4/4), 18/2= 9.
Mary should order 9 pizzas, with no pizza left over.
The answer to this question is the second choice, SOMETIMES, because there are those systems of linear equations that the lines are parallel and do not intersect therefore has no solution. There are also other systems representing the same line and has therefore infinite number of solutions.
Answer: 7 hrs 42 mins
Step-by-step explanation:
San Antonio to Houston 3 1/3
Houston to Dallas 4 1/12
3 1/3 + 4 1/12=10/3+48/12=89/12=75/12
7 5/12= 7.4166667
= 7hrs and 42 mins
(10/4) - 6.2
10 divided by 4, do that first because it's in the parenthesis, then subtract 6.2 from it.
