Use a half-angle formula to find the exact value of the expression.cos
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Determine whether the given geometric series is convergent or divergent, and find the sum if it is convergent.128 - 64 + 32 - 16 + ...
A. Convergent; S = 256 B. Divergent C. Convergent; S = 85.33 D. Convergent; S = 51.2
Mathematics
Fill in the blank with one of the words or phrases listed below. 
A combination of operations on variables and numbers is called a(n) 
.
A. equation B. algebraic expression C. evaluating the expression D. addition
Mathematics
Factor the trinomial completely. If the trinomial cannot be factored, say it is prime.x2 - x - 12
A. (x + 4)(x - 3) B. prime C. (x + 3)(x - 4) D. (x + 1)(x - 12)
Mathematics
What number is not expressed in scientific notation?
Mathematics