Solve the equation by completing the square.x2 + 8x = 7
A. {4 + 
}
B. {-4 ± 
}
C. {-1 ± 
}
D. {-4 ± 1
}
Answer: B
Mathematics
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Graph the set of points whose polar coordinates satisfy the given equation or inequality.? ? ? ? 
, r = -4
A. 
B. 
C. 
D. 
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The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds). s (m)
When is the body moving backward?
A. 8 < t < 9 B. 8 < t ? 10 C. 2 < t < 3, 4 < t < 5, 7 < t < 9 D. 2 < t < 3, 4 < t < 5, 7 < t < 8
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Completely factor the polynomial or state that the polynomial is prime.(x + 5)2 - 64
A. (x + 13)(x - 3) B. x2 + 10x - 39 C. (x + 3)(x - 13) D. (x + 69)(x - 59)
Mathematics
Find the perimeter.
A. 127 m B. 110 m C. 158 m D. 79 m
Mathematics