Solve.-0.3(20) + 0.6x = 0.3(20 + x)
A. x = 50
B. x = 40
C. x = 30
D. x = 20
Answer: B
Mathematics
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Describe the figure as completely as possible, using the properties simple, closed, polygonal curve, and polygon.
A. Closed polygonal curve, not simple B. closed, not simple C. Polygon D. Closed polygonal curve, simple
Mathematics
Solve the system for x and y using Cramer's rule. Assume a and b are nonzero constants.
x + 
y = abx + y = a
A. 
B. 
C. 
D. {(ab (1 - ab), a2 (b2 - 1))}
Mathematics
Use the conversion formula 
to replace the expression
?
?
by a sine function.
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Perform the indicated operation and, if possible, simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics