Decide whether the statement is always true, sometimes true, or never true.The difference between two positive numbers is negative.
A. Always true
B. Never true
C. Sometimes true
Answer: C
Mathematics
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Solve the problem.Let u = 6i + j, v = i + j, and w = i - j. Find scalars a and b such that u = av + bw.
A. 6v + w B. 0.2857 v + 0.4000 w C. 3.500 v + 2.500w D. 6v - w
Mathematics
Find the component form for the vector with the given magnitude and direction angle ?. Round values to the nearest tenth.
= 89.8, ? = 279.3°
A. 
B. 
C. 
D. 
Mathematics
Find the limit.
A. 0 B. 9 C. 18 D. No limit
Mathematics
Add.13 + (-3) + 13 + (-21)
A. 18 B. 2 C. -24 D. 50
Mathematics