Find the missing coefficient so that the lines are perpendicular.4x - y = 7 and y = Bx + 
A. B = 1
B. B = - 
C. B = 
D. B = 4
Answer: B
Mathematics
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Find an equation for the line that passes through the given point and satisfies the given conditions.P = (9, 9); perpendicular to v = 2i + 4j
A. y - 9 = 
(x - 2)
B. 2x + 4y = 54
C. 4x - 2y = 18
D. 2x + 4y = 20
Mathematics
Complete the identity.tan2 ? - 3 sin ? tan ? sec ? = ?
A. -2 tan2 ? B. sin ? tan ? C. 1 + cot ? D. sec ? csc ?
Mathematics
Find the specified domain.For f(x) = 
and g(x) = 
, what is the domain of f ? g?
A. (-?, 0) ? (0, 4) ? (4, ?)
B. (-?, 0) ? (0, ?)
C. (-?, 0) ? 
? 
D. 
? 
Mathematics
For the pair of functions, find the indicated sum, difference, product, or quotient.f(x) = 5x - 8, g(x) = 3x + 2Find (fg)(x).
A. 8x2 - 14x - 6 B. 15x2 - 22x - 16 C. 15x2 - 16 D. 15x2 - 14x - 16
Mathematics