Simplify by combining like terms.-4b - (-2b)
A. -2b
B. -6b
C. 6b
D. 2b
Answer: A
Mathematics
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Find the curvature of the curve r(t).r(t) = (3 + ln(sec t))i + (9 + t)k, -?/2 < t < ?/2
A. ? = 1 - cos t B. ? = cos t C. ? = sin t D. ? = -cos t
Mathematics
Find the difference.19.890 - 6.875
A. 13.015 B. 12.915 C. 13.115 D. 26.765
Mathematics
Simplify the expression. Assume that all variables are positive.
A. x11/3
B. 
C. x19/3
D. 
Mathematics
Find the indicated partial sum for the sequence.50, 81, 112, 143, . . .; S10
A. -895 B. -1645 C. 1895 D. 1645
Mathematics