Find the dot product v ? w.v = i + j and w = i + j - k
A. 3
B. -2
C. 1
D. 2
Answer: D
Mathematics
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Sketch the graph of f by hand.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Use an integer to express the number.The stock market gained 18 points on Monday.
A. 18 B. -18
Mathematics
Solve using the elimination method. If the system has an infinite number of solutions, use set-builder notation to write the solution set. If the system has no solution, state this.0.1x + 0.6y = 20.8x - 0.1y = 6.2
A. (8, 2) B. (80, 20) C. (2, 8) D. (0.8, 0.2)
Mathematics
Solve the rational inequality.
> 
A. (-9, ?) B. (-?, -9) C. (-?, ?) D. ?
Mathematics