Solve using Cramer's rule.-5x - 7z = -61-2x + 5y - 9z = -59-5x - 8y = -29
A. (2, 1, 8)
B. (1, 3, 8)
C. (3, 8, 3)
D. (1, -3, -8)
Answer: B
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Write an equation to find the number. Solve.Fourteen more than a number equals -4 times 1 less than the number.
A. x + 14 = -4(1 - x); x = 6 B. x + 14 = -4(1 - x); x = -6 C. x + 14 = -4(x - 1); x = -2 D. x + 14 = -4(x - 1); x = 2
Find the equation of the parabola which has the given vertex V, which passes through the given point P, and which has the specified axis of symmetry.V(1, -2), P(0, -1), horizontal axis of symmetry
A. (y+ 2)2 = x - 1 B. (x+ 2)2 = -(y - 1) C. (y+ 2)2 = x + 1 D. (y+ 2)2 = -(x - 1)
Write the number as a fraction and a decimal.A local businessman is selling plots of land for home development. Each piece of land measures 
acres.
A. 
, 2.5
B. 2
, 0.5
C. 2
, 2.5
D. 5
, 5.2
Find the center, foci, and vertices of the ellipse.9x2 + 64y2 = 576
A. center at (0, 0)
foci at (0, -3) and (0, 3)
vertices at (0, -9), (0, 9)
B. center at (0, 0)
foci at (-8, 0) and (8, 0)
vertices at (-64, 0), (64, 0)
C. center at (0, 0)
foci at (- 
, 0) and (
, 0)
vertices at (-8, 0), (8, 0)
D. center at (0, 0)
foci at (0, - 
) and (0, 
)
vertices at (0, -8), (0, 8)