Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. no solution; ?
B. {(0, 0)}
C. {(-1, 1)}
D. {(-1, -1)}
Answer: C
Mathematics
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A. 
B. 
? 
C. 
D. 
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Complete.37 mL = L
A. 0.37 B. 0.037 C. 3700 D. 37,000
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Divide.-0.9 ÷ (-0.3)
A. 0.27 B. -2.9 C. -3 D. 3
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Find the instantaneous rate of change for the function at the given value.s(t) = t2 + 5t at t = 4
A. 3 B. 21 C. 13 D. 9
Mathematics