Write the following in scientific notation.6,600,000
A. 6.6 × 106
B. 6.6 × 107
C. 6.6 × 10-6
D. 6.6 × 10-7
Answer: A
Mathematics
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Find the center of mass of a thin plate of constant density covering the given region.The region bounded by y = 8 - x and the axes
A. 
= 32, 
= 32
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 8, 
= 8
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Graph the polar equation.r2 = 54 cos 4?
A. 
B. 
C. 
D. 
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Solve the problem.Jake wants to work 2
hours at his part-time job this week. He has already worked 
How many more hours does he need to work?
A. 1
hr
B. 
hr
C. 
hr
D. 
hr
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Simplify the expression.
3/2
A. 
B. - 
C. - 
D. 
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