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. {(4, 0)}
B. no solution; ?
C. {(1, -5)}
D. {(0, -4)}
Answer: D
Mathematics
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A. 70.6 lb B. 70 lb C. 70.4 lb D. 70.5 lb
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Find the length of the curve.x = 
(t2 + 6) 3/2, y = 6t, 0 ? t ? 1
A. 20
B. 
C. 
D. 
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Determine whether the statement is true or false.9 < 15
A. False B. True
Mathematics