Solve the problem.The string on a balloon is 84 mm long. What is this length measured in cm? Round to the nearest tenth if necessary.
A. 8.4 cm
B. 840 cm
C. 8400 cm
D. 0.8 cm
Answer: A
Mathematics
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Decide whether the ordered pair is a solution of the given system.(-1, 4)2x + y = 24x + 2y = 4
A. Yes B. No
Mathematics
Simplify. Express your answer with positive exponents. Assume that all variables are nonzero.
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.
= 2
A. {-9} B. {5, 9} C. ? D. {-5, 9}
Mathematics
Solve the problem.The value, v, in hundreds of dollars, of Juan's television is approximated by 
where t is the number of years since he first bought the television. Graph the equation and use the graph to estimate the value of the television 6 years after it was purchased.
A. $880 B. $1300 C. $400 D. $700
Mathematics