Find the probability of the event.A die is rolled 18 times and two threes come up.
A. .099
B. .060
C. .160
D. .230
Answer: D
Mathematics
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Write the expression in terms of sine and cosine, and simplify so that no quotients appear in the final expression.
A. -cos x B. -sin x C. sin x D. cos x
Mathematics
Solve the equation.a - 7 = -1
A. -8 B. -6 C. 8 D. 6
Mathematics
Simplify.
A. 
y3
B. 
y2
C. 
y
D. 
y4
Mathematics
The given pattern continues. Write down the nth term of the sequence {an} suggested by the pattern.
, 
, 
, 
, ...
A. an = 
B. an = 
C. n(n + 3)
D. an = 
Mathematics