Find the solution to the system of equations by the substitution method. x + 2y = -105x + 3y = -15
A. (1, -5)
B. (1, -6)
C. (5, 0)
D. (0, -5)
Answer: D
Mathematics
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?
A. 990° B. 164° C. 1980° D. 33?°
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Solve the equation.9x = 
A. {-4, 4}
B. {4}
C. 
D. ?
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Find the probability.A lottery game contains 23 balls numbered 1 through 23. What is the probability of choosing a ball numbered 24?
A. 23
B. 1
C. 
D. 0
Mathematics
Solve the system mentally, without the use of a calculator or pencil-and-paper calculation. Try to visualize the graphs of both lines.x + 0y = 90x + y = 4
A. x = 9; y = 4
B. x = 4; y = 9
C. x = 9; y = 2
D. x = 2; y = 
Mathematics