Simplify.
? 
A. 30
B. 
C. 
D. 
Answer: B
Mathematics
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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)
Mathematics
Express in terms of sums and differences of logarithms.logb
A. 
logbx + logby - 4logbz
B. 
logbx ? logby ÷ 4logbz
C. 
logbx + 2logby - 8logbz
D. 
logbx - logby + 4logbz
Mathematics
In a right triangle, find the length of the side not given. Let c represent the length of the hypotenuse. Give an answer to the nearest tenth if necessary.a = 5 yd, b = 5 yd
A. c ? 7.1 yd B. c ? 3.2 yd C. c ? 5.1 yd D. c = 5 yd
Mathematics
Solve the problem.How many of the "words" below have nontrivial rotational symmetry? bub pop oxo mow bop pub
A. 4 B. 1 C. 2 D. 3
Mathematics