Find the missing length(s) in the right triangle. Give an exact answer and, where appropriate, an approximation to three decimal places.
A. a = 5 cm; b = 75 cm
B. a = 5 cm; b = 5
? 8.66 cm
C. a = 5
? 8.66 cm; b = 7.5 cm
D. a = 5
? 8.66 cm; b = 5 cm
Answer: B
Mathematics
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B. 
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A. 
B. 
C. 
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Solve the equation.
+ 
= 4
A. {
, -2}
B. {0}
C. {2, -2}
D. {-2}
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Find a general term for the geometric sequence.8, -4, . . .
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n - 1
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D. an = 8
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Mathematics