Find the unit tangent vector of the given curve.r(t) = (10 - 2t)i + (2t - 10)j + (4 + t)k
A. T = 
i - 
j - 
k
B. T = - 
i + 
j + 
k
C. T = 
i - 
j - 
k
D. T = - 
i + 
j + 
k
Answer: B
Mathematics
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Subtract.
- 
A. 
B. 
C. 
D. 
Mathematics
Evaluate the function h(x) = 2[[x]] for x = -4. ?
A. ?h(x) = -8 B. ?h(x) = -6 C. ??h(x) = 4 D. ?h(x) = -4 E. ?h(x) = -2
Mathematics
Find a simplified form of the difference quotient for the function.f(x) = b - mx
A. -m B. -mx C. -mx + h D. -m + h
Mathematics
Solve.-1000y = 9.8490
A. -9,849 B. -0.09849 C. -984.9 D. -0.009849
Mathematics