Perform the indicated operation. Write your result in scientific notation.(4 × 106)(7 × 106)
A. 2.8 × 1012
B. 28 × 1036
C. 28 × 1013
D. 2.8 × 1013
Answer: D
Mathematics
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Solve. If necessary, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole.One day 54 office workers were sick with the flu. If this were 90% of the total number of office workers, how many office workers were there altogether?
A. 4860 office workers B. 60 office workers C. 48,600 office workers D. 600 office workers
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For the pair of functions, find the indicated composition.f(x) = 
x, g(x) = - 
xFind (f ? g)(x).
A. 0 B. -x C. 1 D. x
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Find A-1 if it exists.A = 
A. 
B. 
C. 
D. 
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Find the partial derivative.Let z = f(x, y) = x3 - 4x2y + 7xy3. Find 
.
A. -4x2 + 7xy2 B. 3x2 - 8xy + 7y3 C. 3x2 - 8x + 7 D. 3x2 - 8xy + 21xy2
Mathematics