Factor by grouping.2xy - 4x + 7y - 14
A. (2x + 7)(y - 2)
B. (2x + 7y)(y - 2)
C. (2x - 2)(y + 7)
D. (2x + y)(7y - 2)
Answer: A
Mathematics
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Solve the problem.The length of the ellipse x = a cos t, y = b sin t, 0 ? t ? 2? is Length = 4a
where e is the ellipse's eccentricity.Use Simpson's Rule with n = 6 to estimate the length of the ellipse when a = 2 and e = 
.
A. 11.8956 B. 12.1751 C. 11.2546 D. 12.2097
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Find an equation of variation for the given situation.m varies directly as p, and m = 72 when p = 9.
A. m = 
p
B. m = 63p
C. m = 81p
D. m = 8p
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Provide an appropriate response.Suppose X has density function f(x) = 
Find P(2 < X < 3).
A. 
B. 
C. 
D. 
E. 
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Solve by the quadratic formula. Simplify answers. Use i notation for nonreal complex numbers.
+ 
= 
A. x = 
B. x = 
C. x = 
D. x = 
Mathematics