Simplify.(4a6b7c0)2
A. 16a12b14
B. 0
C. 4a12b14
D. 16a12b14c2
Answer: A
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Find the work done by the force field F in moving a particle along the curve C.F(x, y) = (x4 + y4)i + xyj; C is the curve x = t2, y = t, 0 ? t ? 1
A. 
B. - 
C. 
D. 
Perform the indicated operation.A factor used in measuring the loudness sensed by the human ear is 
0.3, where I is the intensity of the sound and I0 is a reference intensity. Evaluate this factor for I = 3.3 × 10-6 W/m2 and I0 = 1.0 × 10-12 W/m2 to two significant digits.
A. 0.011 B. 0.023 C. 44 D. 90
Solve the problem.To find the distance AB across a river, a distance BC = 1,101 m is laid off on one side of the river. It is found that B = 112.8° and C = 12.0°. Find AB rounded to the nearest meter.
A. 279 m B. 230 m C. 233 m D. 282 m
Complete.6.4 yd = 
m (Round to the nearest tenth.)
A. 252.0 B. 48.8 C. 5.8 D. 162.6