Find the work done by F over the curve in the direction of increasing t.F = ti + 
j + k ; C: r(t) = e6ti + e6tj + (-4t2 + t)k, -1 ? t ? 1
A. W = -6
B. W = e6 + e-6 + 2
C. W = e6 + e-6 - 6
D. W = 2
Answer: B
Mathematics
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A man uses a 11-foot bar to lift a 108-pound tire. He places a rock 2 feet from the tire to act as the fulcrum. How much force must he exert to lift the tire?
A. 108 lb B. 12 lb C. 24 lb D. 9 lb
Mathematics
Solve. 
> 9
A. x < -2 or x > 16 B. x < -9 or x > 9 C. -2 < x < 16 D. x < -16 or x > 2
Mathematics
Provide an appropriate response.For a certain system of two linear equations, the values of the determinants used in Cramer's rule are 
and 
What is the solution set of the system?
A. 
B. 
C. {(2, -8)}
D. 
Mathematics
Perform the conversion. Round to the nearest hundredth when necessary.91.5 g to oz
A. 201.30 oz B. 2594.03 oz C. 3.23 oz D. 41.54 oz
Mathematics