Simplify the complex number to its rectangular form.9j7 - 5
A. 9j - 5
B. -14
C. -14j
D. -9j - 5
Answer: D
Mathematics
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Find the curvature of the curve r(t).r(t) = (7 + ln(sec t))i + (4 + t)k, -?/2 < t < ?/2
A. ? = -cos t B. ? = sin t C. ? = cos t D. ? = 1 - cos t
Mathematics
Factor out the common binomial factor as the GCF.4x(5x + 2) - 3(5x + 2)
A. (20x - 3)(x + 2) B. (4x + 3)(5x - 2) C. (20x + 3)(x - 2) D. (4x - 3)(5x + 2)
Mathematics
Solve the inequality and write the solution set using interval notation; then graph the solution set on a number line. (a + 1)(a - 6)(a - 7) > 0
A. (-1, 6) ? (7, ?)
B. (7, ?)
C. (-?, 6)
D. (-?, -1) ? (6, 7)
Mathematics
Solve the equation by completing the square.a2 - 8a - 20 = 0
A. -18, -2
B. 10, -2
C. -10, 2
D. 
, - 
Mathematics