Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Answer: B
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Find the work done by F over the curve in the direction of increasing t.F = - 
i + 
j + 
k; C: r(t) = 
i + 
j + 7tk, 0 ? t ? 
A. W = 
+ 
?2
B. W = 
+ 
?2
C. W = 
+ 
?2
D. W = 
+ 
?2
Write the number in scientific notation.A company produces 732,000 small appliances in one year.
A. 7.32 × 105 B. 7.32 × 106 C. 73.2 × 104 D. 7.32 × 10-5
Use a product-to-sum identity to rewrite the expression.sin(12s - 2) sin (6s - 5)
A. 0.5(cos(6s - 7) - cos(18s - 3)) B. 0.5(cos(6s + 3) - cos(18s - 7)) C. 0.5(cos(6s + 3) + cos(18s - 7)) D. 0.5(sin(6s + 3) - sin(18s - 7))
Solve the problem.Professor Kafka teaches an advanced probability class with an enrollment of 13 students. The front row has 6 chairs. A particular student, Carl, must sit in the front row between his tutor, Sue, and his best friend, Pat. In how many different ways can Professor Kafka assign students to sit in the first row?
A. 1440 B. 2880 C. 720 D. 5760