Simplify.
5
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the unit tangent vector of the given curve.r(t) = 
i + 
j - 12tk
A. T = 
i + 
j - 
k
B. T = 
i + 
j - 
k
C. T = 
i + 
j - 
k
D. T = 
i + 
j - 
k
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Sketch the graph of the function.f(x) = 
A. 
B. 
C. 
D. 
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Use the discriminant to determine the number of solutions of the quadratic equation.w2 - 5w + 8 = 0
A. no real solution B. 1 real solution C. 2 real solutions
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Change the percent to a fraction in lowest terms.75%
A. 
B. 
C. 
D. 
E. 
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