Perform the indicated operation and, if possible, simplify.
+ 
A. 
B. 6
C. 
D. 
Answer: A
Mathematics
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Find the work done by F over the curve in the direction of increasing t.F = - 
i + 
j + 
k; C: r(t) = 
i + 
j + 7tk, 0 ? t ? 
A. W = 
+ 
?2
B. W = 
+ 
?2
C. W = 
+ 
?2
D. W = 
+ 
?2
Mathematics
Solve the linear equation.
x = 2 + 
A. {60} B. {30} C. {-60} D. {-30}
Mathematics
Simplify by using the order of operations. Round your answer to the nearest hundredth, if necessary.4.947 + 0.18 ÷ 0.022
A. 85.95 B. 454.95 C. 12,817.50 D. 49.95
Mathematics
Solve the inequality and graph the solution set.5x - 1 < 4 and x - 2 > -1
A. 
B. 
C. ?
D. 
Mathematics