Solve the system by the substitution method.x + y = -1x2 + y2 = -4y - 3
A. {(1, -2), (2, -3)}
B. {(-2, 1, (-3, 2)}
C. {(-1, 0), (-2, 1)}
D. {(0, -1), (1, -2)}
Answer: D
Mathematics
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ln
A. -ln 2 B. ln 2 C. 0 D. No limit
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In the figure, 
is said to be circumscribed about the circle.
Answer the following statement true (T) or false (F)
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Translate to an equation, then solve.The difference of four times n and eight is equal to twenty-three less than n.
A. 4n - 8 = n - 23, n = -5 B. 8 - 4n = 23 - n, n = 5 C. 8n - 4n = 23 - n, n = -5 D. 4n - 8n = n - 23, n = 5
Mathematics
Is the set {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10} a group for multiplication modulo 11? ? ?
A. No B. Yes
Mathematics