Perform the indicated operation and express in lowest terms.
+ 
A. 
B. 
C. 
D. - 
Answer: B
Mathematics
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Solve the problem.If v = -3i + 3j + k, find a vector perpendicular to both v and i + j.
A. -5i + 5j - 6k B. -i + j - 6k C. i + j - 6k D. i - j + 4k
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Find the volume.Find the volume of the solid generated by revolving the region in the first quadrant under the curve 
bounded on the left by x = 1, about the x-axis.
A. 81?
B. 9?
C. 
?
D. 27?
Mathematics
Find the exact value of the expression if ? = 60°. Do not use a calculator.g(?) = cos ?Find [g(?)]2.
A. 
B. 
C. 
D. 
Mathematics
Perform the operation and simplify, or solve the equation for the variable.
= 
+ 
A. -3
B. 3
C. 
D. no solution
Mathematics