Answer: (A)
Packing material is required to fill the box = 
Step-by-step explanation:
The box is shaped like a rectangular prism
base area = 9/10 square foot
height = 1/3 foot
Volume of a prism = base area X Height
=
Answer:
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Step-by-step explanation:
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B) -8 + (-12)
Because you just have to use the distributive property and distribute -1 to (8+12)
Answer:

Step-by-step explanation:
Common denominator: 18
-14/18 + 11/18
= -3/18
Reduce:
-1/6