Translate the problem to a system of equations and then solve.Andy has 16 coins made up of quarters and half dollars, and their total value is $4.75. How many quarters does he have?
A. 3 quarters
B. 13 quarters
C. 18 quarters
D. 5 quarters
Answer: B
Mathematics
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Solve the problem."If there is a choice that has a majority of the first-place votes in an election, then that choice should be the winner of the election." This fairness criterion is called the
A. independence of irrelevant alternatives criterion. B. Condorcet criterion. C. monotonicity criterion. D. majority criterion. E. none of these
Mathematics
Solve the equation.- 
x + 5 = 
A. 0 B. -32 C. 68 D. 32
Mathematics
Solve the equation and check the solution.
x + 
= - 
x - 
A. x = - 
B. x = - 
C. x = 
D. x = - 
Mathematics
Simplify the complex fractions.
A. 
B. 
C. 
D. 
Mathematics