Solve the problem. Round money amounts to the nearest cent.Each piece of lead for a mechanical pencil is 70 mm long. Find the total length in centimeters of the lead in a package with 30 pieces.
A. 2100 cm
B. 21 cm
C. 210 cm
D. 2.1 cm
Answer: C
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Find fx, fy, and fz.f(x, y, z) = cos x sin2 (yz)
A. fx = sin x sin2 (yz); fy = -2z cos x sin (yz) cos (yz); fz = - 2y cos x sin (yz) cos (yz) B. fx = sin x sin2 (yz); fy = - cos x sin (yz) cos (yz); fz = -cos x sin (yz) cos (yz) C. fx = -sin x sin2 (yz); fy = 2z cos x sin (yz) cos (yz); fz = 2y cos x sin (yz) cos (yz) D. fx = -sin x sin2 (yz); fy = z cos x sin (yz) cos (yz); fz = y cos x sin (yz) cos (yz)
Evaluate the integral.
dx
A. 
ln
+ C
B. e(2 sin 3x) + C
C. 
e(2 sin 3x) + C
D. 2 ln
+ C
Solve the problem.A rock falls from a tower that is 208 feet high. As it is falling, its height is given by the formula 
How many seconds (in tenths) will it take for the rock to hit the ground (h = 0)?
A. 3.6 sec B. 13.9 sec C. 2704 sec D. 14.4 sec
Add or subtract, as indicated.0.59 - (-0.39)
A. 1.08 B. 0.2 C. 0.98 D. 0.2301