Calculate the value of the following numerical expression.
÷ 
A. 
B. 
C. 
D. 
Answer: C
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Find the limit of the sequence if it converges; otherwise indicate divergence.an = 1 + (-1)n + (-1)n(n+1)
A. 3 B. 0 C. 1 D. Diverges
Simplify the radical expression. Assume that all variables represent positive real numbers.
? 
A. 
B. 
C. 
D. 
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.sin ? = - 
, 
< ? < 2?Find sin 
.
A. 
B. - 
C. 
D. - 
During the first year at a university that uses a 4-point grading system, a freshman took ten 3-credit courses and received one As, four Bs, three Cs, and two D.
Compute this student's grade point average.
__________
Let the random variable X denote the number of points corresponding to a given letter grade. Find the probability
distribution of the random variable X and compute E(X), the expected value of X.
E(X) = __________