Without graphing, tell if the system is inconsistent, the equations are dependent, or neither. 12x + 4y = 20 3x + y = -5
A. Inconsistent
B. Neither
C. Dependent
Answer: A
Mathematics
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Change the given polar coordinates (r, ?) to rectangular coordinates (x, y).
A. (-5
, -5)
B. (-5, -5
)
C. (5, -5
)
D. (5
, -5)
Mathematics
Write as a percent.
A. 74.6% B. 7.46% C. 746% D. 0.746%
Mathematics
Solve the problem.Suppose the sales of a particular brand of appliance satisfy the relationship 
, where S(x) represents the number of sales in year x, with 
corresponding to 1982. In what year would the sales be 6360?
A. 1988 B. 1993 C. 1990 D. 1991
Mathematics
Solve.An isosceles right triangle has legs of equal length. If the hypotenuse is 18 inches long, find the length of each leg.
A. 81
in.
B. 9
in.
C. 18
in.
D. 
in.
Mathematics