Use a graphing utility to solve the system of equations. Express the solution rounded to two decimal places.
A. x = 0.48, y = 1.63 or (0.48, 1.63)
B. x = 0.22, y = 0.98 or (0.22, 0.98)
C. x = 1.14, y = 0.81 or (1.14, 0.81)
D. x = 0.64, y = 1.89 or (0.64, 1.89)
Answer: D
Mathematics
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Divide and simplify.
÷ 
A. 
B. 
C. 
D. 
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Expand, where i2 = -1.
4
A. 1 - i B. -1 C. 1 D. 1 + i
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Change the word phrase to an algebraic expression. Use x as the variable to represent the number.Four divided by a number
A. 
B. 4 - x
C. 4 + x
D. 4x
Mathematics
Solve the problem.An elevator has 4 passengers and 8 floors. Find the probability that no 2 passengers get off on the same floor considering that it is equally likely that a person will get off at any floor.
A. 0.910 B. 0.610 C. 0.500 D. 0.410
Mathematics