Simplify the expression, writing the answer as a single term without negative exponents.(a-1 + b-1)-1
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Perform the indicated operation.0.28 - 0.83
A. 0.2324 B. -1.01 C. -1.11 D. -0.55
Mathematics
Use the fundamental identities to find the value of the trigonometric function.Find csc ?, given that cot ? = - 
and cos ? < 0.
A. - 
B. 
C. 
D. - 
Mathematics
Solve the polynomial inequality. Express the solution in interval notation.(x + 6)(x - 3)(x - 4) > 0
A. (-?, 3) B. (-6, 3) ? (4, ?) C. (4, ?) D. (-?, -6) ? (3, 4)
Mathematics
Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?
A. $0.75 B. $2.00 C. -$3.00 D. $3.00
Mathematics