Find the LCD of the list of fractions.
, 
A. 224
B. 1344
C. 672
D. 336
Answer: C
Mathematics
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Find the curvature of the curve r(t).r(t) = (10 + ln(sec t))i + (4 + t)k, -?/2 < t < ?/2
A. ? = -cos t B. ? = 1 - cos t C. ? = cos t D. ? = sin t
Mathematics
Find the value of the determinant.
A. -5 B. -7 C. 5 D. -1
Mathematics
Graph the system of inequalities. Indicate the solution by shading.2x + 3y ? 6 x - y ? 3 x ? 1
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The rate of change of the population of a town is given by 
where P is the population in thousands t years after 1970. Find the function P(t) given that the population in 1999 is 152 thousand.
A. P(t) = 
+ ln (t - 6) + 66
B. P(t) = 1.8t + 1.8 ln (t - 6) + 94
C. P(t) = 1.8t + 10.8 ln (t - 6) + 66
D. P(t) = 
+ 1.8 ln (t - 6) + 66
Mathematics