Answer:
Casey is correct.
Step-by-step explanation:
Robert's 5 1/8 + 2 1/3 = 7 1/2 is wrong because if 5+2 = 7, I would have to change the denominator of both fractions so they are both the same. The denominator would have to be 24. That would make the fractions 3/24 and 8/24. If you added them together, it would not be able to simplify to 1/2.
Casey's -4 1/2 + 6 3/4 = 2 1/4 is correct because —4 - 6 = 2. In order to make the fractions have the same denominator, you would have to multiply -1/2 by 2 on both numerator and denominator wich would equal -2/4. Now add -2/4 and 1/4 and you get 1/4. If my explaining is confusing, I'm sorry!☜(゚ヮ゚☜)
[(29+18) + (17-8)] / 8
Remember we start with the grouping symbols first, starting with the parentheses.
29+18 = 47
17-8 = 9
Then we add them together.
47+9 = 56
So now we have:
[56] / 8
56 / 8 = 7
The answer is 7
44 peices are needed to surround the yard in fencing
Answer:
Step-by-step explanation:
Associative property