Find the unit vector having the same direction as v.v = -4j
A. u = -4j
B. u = - 
j
C. u = -j
D. u = 16j
Answer: C
Mathematics
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Find a formula for the nth term of the sequence.0, 2, 2, 2, 0, 2, 2, 2 (0, 2, 2, 2 repeated)
A. an = 1 + (-1)n(n+1)(n+2)/6 B. an = 1 + (-1)(n+1)(n + 2)/2 C. an = 1 + (-1)n(n-1)/2 D. an = 1 + (-1)n(n+1)/2
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Simplify. Express your answer in standard form.(n6 + 13) + (7n5 + 18n4 - 5) - (9n5 - 18n4 + 20)
A. n6 - 2n5 + 36n4 - 12 B. 22n9 C. n6 - 2n5 + 36n4 + 28 D. n6 - 2n5 + 27n4 + 28
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Add the numbers using the number line.-2 + (-8) 
A. 10 B. -6 C. -10 D. 6
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Evaluate the expression using a calculator.- 
- 
+ 
A. 
B. 
C. 
D. 
Mathematics