Solve. Write a mixed numeral for the answer.The weight of a certain gas is 5 kg per cubic meter. How many cubic meters would be occupied by 105 kg of the gas?

A. 21 cu m
B.  cu m
C. 20 cu m
D. 2756 cu m


Answer: C

Mathematics

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A. x2 + y2 + z2 + 4z = 60 B. x2 + y2 + 8 z2 + 4z = 60 C. x2 + y2 + 8 z2 - 4z = 60 D. x2 + y2 + z2 - 4z = 60

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Use similar triangles and the fact that corresponding sides are proportional to find the length of the side marked with an x.

A. 39 in. B. 156 in. C. 4.3 in. D. 0.9 in.

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If an argument reads

p?q q?r r?s, then we can conclude (a) s (b) p?s (c) p (d) s?p (e) No conclusion can be reached.

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Simplify the expression.(10 + 8)(10 + 7)

A. 480 + 150
B. -80 + 150
C. 100 + 56 + 150
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Mathematics