Provide an appropriate response.The position of a particle is given by r(t) = sin 2t i + cos 3t j. Find the velocity vector for the particle.
A. cos 2t i - sin 3t j
B. 2 i + 3 j
C. 2 cos 2t i - 3 sin 3t j
D. 2 sin 2t i + 3 cos 3t j
Answer: C
Mathematics
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Solve the rational equation.
+ 
= 
A. {8}
B. {-8}
C. {-4}
D. 
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Factor the trinomial, if possible.64m2 - 160mn + 100n2
A. (16m + 5n)2 B. 4(4m - 5n)2 C. (16m - 20n)2 D. 4(4m + 5n)2
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Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
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Convert the units.3.8 L = 
mL
A. 0.0038 mL B. 0.38 mL C. 380 mL D. 3800 mL
Mathematics