Solve the problem.Find a unit vector perpendicular to plane PQR determined by the points P(2, 1, 1), Q(1, 0, 0) and R(2, 2, 2).
A. 
(j + k)
B. 
(i - j)
C. 
(i + j)
D. 
(j - k)
Answer: D
Mathematics
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Simplify. Combine like terms if possible.-8n - (-n)
A. -9n B. -7n2 C. -7n D. -8n2
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Determine the total turn for the closed curve. Assign a positive measure to counterclockwise turning.
A. -360° B. 720° C. 0° D. 360°
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The triangle with vertices at (0, 0), (0, b), and (a, 0) is a right triangle with the vertex of the rightangle at the point (0, 0).
Answer the following statement true (T) or false (F)
Mathematics
Solve the problem.A man earned $3500 the first year he worked. If he received a raise of $600 at the end of each year, what was his salary during the 15th year?
A. $12,500 B. $11,900 C. $8400 D. $3500
Mathematics