Write the number in standard notation.9.432 × 10-6
A. 0.0000009432
B. 0.00009432
C. -9,432,000
D. 0.000009432
Answer: D
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At what points is the given function continuous?f(x, y, z) = 
A. All (x, y, z) ? (0, 0, 0) B. All (x, y, z) ? ± (-3, 9, -8) C. All (x, y, z) D. All (x, y, z) ? (-3, 9, -8)
Find the mass of the wire that lies along the curve r and has density ?.C1: r(t) = (6 cos t)i + (6 sin t)j, 0 ? t ? 
;C2: r(t) = 6j + tk, 0 ? t ? 1; ? = 3t3
A. 
units
B. 
?3 units
C. 
units
D. 3?3 units
Solve the problem.Maxwell's theory of electromagnetic waves established that electromagnetism moved through space in waves. Under certain conditions, an equation that Maxwell used to explain the motion of such waves would take the form 
where ? is the angle of incidence of the original wave, ? is the angle of incidence of the wave when reflected, A is the amplitude of the original wave, and B is the amplitude of the wave when reflected. Find the value of 
when 
-4.0px;" /> and 
Round to four decimal places.
A. -0.4789
B. 0.3492
C. -0.3872
D. 0.1661
Reverse the order of integration and then evaluate the integral.
A. ln 7 - 1
B. 
C. 
D. ln 7