Find the curvature of the space curve.r(t) = (t + 5)i + 4j + (ln(sec t) + 9)k
A. ? = sin t
B. ? = csc t
C. ? = sec t
D. ? = cos t
Answer: D
Mathematics
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Determine whether the pair of lines is parallel, perpendicular, or neither.y = 4x + 4x - 4y = 8
A. parallel B. perpendicular C. neither
Mathematics
Solve the problem.How many different sequences of 4 digits are possible if the first digit must be 3, 4, or 5 and if the sequence may not end in 000? Repetition of digits is allowed.
A. 1512 B. 2999 C. 2000 D. 2997
Mathematics
Use intercepts and a checkpoint to graph the linear function.50x + 40y = 200
A. (0, 5), (-4, 0)
B. (0, -5), (4, 0)
C. (0, -5), (-4, 0)
D. (0, 5), (4, 0)
Mathematics
Solve the problem.On a summer day, the bottom water of a lake is at a temperature of 
Celsius. What is this temperature in Fahrenheit?
A. 40° B. 14.4° C. 46.4° D. 8°
Mathematics