Answer:
9 years
Step-by-step explanation:
-7 is correct because a negative plus a negative is always a negative
Answer:

Step-by-step explanation:
Considering the expression

As

<em>Improper fraction is a fraction which has numerator greater than denominator, such as 5/3.</em>
So,

As
is converted into improper fraction
.
And
can not be further reduced.
Therefore,

Keywords: fraction, reduced form, improper fraction
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Number of 1/2-inch cubes length-wise = 8 1/2 ÷ 1/2 = 17
Number of 1/2-inch cubes width-wise = 5 1/2 ÷ 1/2 = 11
Number of 1/2-inch cubes height-wise = 2 1/2 ÷ 1/2 = 5
Number of 1/2-inch cubes = 17 x 11 x 5 = 935
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Answer: 935 1/2-inch cubes are needed.
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