Indicate whether the statement is true always, sometimes, or never.When i is raised to an even power, the result is -1.
A. Always
B. Sometimes
C. Never
Answer: B
Mathematics
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Evaluate using the order of operations.-4 + (-2) + 2 + (-1) + (-5)
A. -10 B. -14 C. 10 D. -12
Mathematics
Find the range for the given data.The amount that Jeremy has saved in each of the last six months is shown below. 
A. $483 B. $109 C. $457 D. $113
Mathematics
Find the center of mass of a thin plate covering the given region with the given density function.The region between the x-axis and the curve y = 
, 1 ? x ? 2, with density ?(x) = 
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Mathematics
Given the perimeter and either the length or width of a rectangle, find the unknown measurement by using the appropriate formula.The perimeter is 32 inches and the width is 4 inches.
A. 14 inches B. 23 inches C. 12 inches D. 24 inches
Mathematics