Solve by the quadratic formula. Simplify answers. Use i notation for nonreal complex numbers.9x2 = -4x
A. x = 0
B. x = ± 
C. x = 
, x = 0
D. x = - 
, x = 0
Answer: D
Mathematics
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Compute the unit binormal vector and torsion of the curve. r(t) = 
A. B(t) = 
, ? = 0
B. B(t) = 
, ? = 1
C. B(t) = 
, ? = 0
D. B(t) = 
, ? = 1
Mathematics
First estimate the answer. Then add or subtract to find the exact answer. Write answer as a mixed number.
A. Estimate: 10; Exact: 
B. Estimate: 11; Exact: 
C. Estimate: 11; Exact: 
D. Estimate: 10; Exact: 
Mathematics
Solve the problem.The number G of gears a machine can make varies directly as the time T it operates. If it can make 7665 gears in 4 hours, how many gears can it make in 2 hours?
A. 3833 gears B. 7671 gears C. 1916 gears D. 1 gears
Mathematics
Sketch the polar graph.
r = 3 – 5 sin ?
Mathematics