If s denotes the length of the arc of a circle of radius r subtended by a central angle ?, find the missing quantity.r = 
feet, s = 8 feet, ? = ?
A. 20 radians
B. 20°
C. 
radians
D. 
°
Answer: A
Mathematics
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Find the indicated term of the geometric sequence.a6 when a1 = 
and r = 7.
A. 
B. 
C. 
D. 
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Find the difference.-14 - 14
A. 0 B. -14 C. -28 D. 28
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Add. Do not use a number line except as a check.9 + (-8)
A. 17 B. -1 C. 1 D. -17
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Simplify. Write the answer as a mixed number as needed.1
× 2 ÷ 
A. 1
B. 1
C. 7
D. 2
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