Solve the problem.Find the equation of the plane perpendicular to the plane with equation x - 2y + 5z = 15 and the plane with equation3x + z = -7 and containing the point P = (-5, 0, -7).
A. x - 2y + 5z + 40 = 0
B. 3x + z + 22 = 0
C. -x + 7y + 3z - 16 = 0
D. -x + 7y + 3z + 16 = 0
Answer: D
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Divide. If a repeating decimal is obtained, use notation such as 0.
, 0.
, or 0.
.
A. 0.3
B. 0.
C. 0.36
D. 0.
Solve the problem.Two angles are supplementary if the sum of their measures is 180°. If the measure of one angle is given by (
)° and the measure of its supplement is given by (
)°, find the measures of the two angles.
A. 40°, 140° B. 124°, 56° C. 80°, 100° D. 62°, 118°
Find the minimum or maximum value of f (as indicated) subject to the given constraint.Minimum of f(x, y, z) = x2 + y2 + z2,subject to x + 2y - z = 3
A. Minimum = 
at 
B. Minimum = 1 at (1, 1, 0)
C. Minimum = 
at 
D. Minimum = 1 at (0, 1, -1)
Solve the formula for the specified letter.A = 
h(B + b) for b
A. b = 
B. b = 
C. b = 
D. b = 2A - Bh