Solve the problem.Suppose that R ={(x, y): 0 ? x ? 4, 0 ? y ? 4}, and P is the partition of R into four equal squares by the lines x =2 and y = 2. 
approximate 
by calculatiang the Riemann sum 
, assuming that 
are the centers of the four squares.
A. 96
B. 48
C. 384
D. 192
Answer: D
Mathematics
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Write the number in standard form.7.21 × 10-4
A. -721,000 B. 0.0000721 C. 0.00721 D. 0.000721
Mathematics
Determine whether the system is consistent.5x1 + 2x2 + x3 = -112x1 - 3x2 - x3 = 177x1 + x2 + 2x3 = -4
A. Yes B. No
Mathematics
Simplify.
A. - 
B. 2
C. 3
D. -2
Mathematics
Convert the measure to its alternate U.S. or metric form. Two conversions may be required. Use a decimal approximation for the result rounded to the nearest hundredth when necessary.Convert 5
miles to meters. (Convert first to kilometers using a fractional approximation.)
A. 820 meters B. 8200 meters C. 320.31 meters D. 3203.13 meters
Mathematics