Perform the indicated operation and express with the proper accuracy and precision. The first number given is approximate and the second number is exact. (Use calculator if needed).0.3073 + 19.7
A. 20.0073
B. 20
C. 20.0
D. 20.01
Answer: D
Mathematics
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Find the nth term an of the geometric sequence.an = 
; 4, - 
, 
, . . . .
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Translate the argument into symbolic form. Then use a truth table to determine whether the argument is valid or invalid. (Ignore differences in past, present, and future tense.)If every student passes the quiz, then no review sessions are needed.
? Some review sessions are needed.
What will be an ideal response?
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Solve the system by graphing. If there isn't a unique solution to the system, state the reason.
A. (-1, -2) B. (1, 2) C. (2, 1) D. inconsistent system of equations
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Multiply and simplify.
? 3b
A. 
b
B. 
C. 
D. 11b
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