Solve the problem.The weight that a horizontal beam can support varies inversely as the length of the beam. Suppose that a 10-m beam can support 270 kg. How many kilograms can a 5-m beam support?
A. 0.1852 kg
B. 0.0019 kg
C. 5.4 kg
D. 540 kg
Answer: D
Mathematics
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Use the graph of population change per year for a metro area to answer the question. 
What is the difference of the 1998 and 1997 population changes?
A. 3797 B. 4843 C. -4843 D. -3797
Mathematics
Given a group of students: 
or 
list and count the different ways of choosing the following officers or representatives for student congress. Assume that no one can hold more than one office.Four representatives
A. ABCD, ABCE, ACDE, ADEB, BCDE; 5 B. ABCD, ABCE, ACDE, ADEB, BCDE, BCEA, BDEA, CABD, CEDB, DACE; 10 C. ABCD, ABCE, ACDE, ADEB; 4 D. ABCD; 1
Mathematics
Simplify the expression using the order of operations.(2 + 9) ? 7 + [16 ÷ (4 ÷ 4)]
A. 66 B. 81 C. 78 D. 93
Mathematics
Find the reciprocal.
A. 
B. 13
C. 
D. 
Mathematics