Divide and simplify.
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.Find a unit vector perpendicular to plane PQR determined by the points P(2, 1, 3), Q(1, 1, 2) and R(2, 2, 1).
A. 
(i - 2j - 2k)
B. 
(i - 2j - k)
C. 
(i - 2j + k)
D. 
(-i - 2j - k)
Identify the vertex and axis of symmetry of the parabola.x = -y2 - 4y - 2
A. Vertex (6, 2); Axis of symmetry y = 2 B. Vertex (6, -2); Axis of symmetry y = -2 C. Vertex: (2, -2); Axis of symmetry y = -2 D. Vertex (- 6, 2); Axis of symmetry y = 2
Using the addition/subtraction method, find the value of x and y to satisfy the following equations: 5x - 5y = 8; 7x - 5y = 20
a. x = -6 y = -4.4 b. x = 6 y = 4 c. x = 4.4 y = 6 d. x = 6.4 y = 4 e. x = 6 y = 4.4
Solve the problem.$1000 is invested at 6% compounded quarterly. In how many years will the account have grown to $14,000? Round your answer to the nearest tenth of a year.
A. 23.0 years B. 1.6 years C. 45.3 years D. 44.3 years