Express the sum using summation notation.3 + 12 + 27 + . . . + 108
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the system.x + 3y + 3z = -20 3y + 4z = -29 z = -5
A. ? B. {(4, -5, -3)} C. {(-5, -3, 4)} D. {(4, -3, -5)}
Mathematics
Write the mixed number as an improper fraction. 7
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.There were 33,000 people at a ball game in Los Angeles. The day's receipts were $222,000. How many people paid $14.00 for reserved seats and how many paid $4.00 for general admission?
A. 10,500 paid $14 and 22,500 paid $4 B. 9000 paid $14 and 24,000 paid $4 C. 22,500 paid $14 and 10,500 paid $4 D. 24,000 paid $14 and 9000 paid $4
Mathematics
Simplify the expression.(1 + cot ?)(1 - cot ?) - csc2 ?
A. 0 B. 2 cot2 ? C. 2 D. -2 cot2 ?
Mathematics