Evaluate the expression for the given value or values.- 
for x = -400, y = -8
A. - 
B. 50
C. -50
D. 
Answer: A
Mathematics
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Find the volume of the described solid.The base of a solid is the region between the curve y = 3cos x and the x-axis from x = 0 to 
. The cross sections perpendicular to the x-axis are squares with bases running from the x-axis to the curve.
A. 
?
B. 
?
C. 2?
D. 
?
Mathematics
Solve, finding all solutions in [0, 2?).tan x = 3 cot x
A. No solution
B. 
, 
, 
, 1
C. 
, 
, 
, 
D. 
, 
, 
, 
Mathematics
Multiply. Do not simplify.
? 
A. 
B. 
C. 
D. 
Mathematics
Identify the system of linear equations as consistent, inconsistent, or dependent. State whether the system has exactly one solution, no solution, or an infinite number of solutions.
A. consistent-one solution B. dependent-infinite number of solutions C. inconsistent-no solution
Mathematics