Solve the problem.The formula A = 
gives a student's average A after T tests and Q quizzes, where each test counts as 2 quizzes, t is the test average and q is the quiz average. Solve for T.
A. T = 
B. T = 
C. T = 
D. T = 
Answer: A
Mathematics
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Evaluate or simplify the given expression.cos (cot-1 x)
A. 
B. 
C. 
D. 
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Solve the rational equation.
= 
- 
A. ? B. {-8, -16} C. {-8} D. {-16}
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Convert the given equation to a rectangular equation.r = 
A. 15x2 + 16y2 - 64 = 0 B. 16x2 + 16y2 - 16x - 64 = 0 C. 15x2 + 16y2 - 16x - 64 = 0 D. 16x2 + 15y2 - 16y - 64 = 0
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Perform the indicated operation. Give the answer in lowest terms.
A. 12z
B. 
C. 
D. 
Mathematics