Find n for the given value of an in the arithmetic sequence.an = -123; 808, 789, 770, . . .
A. n = 49
B. n = 50
C. n = 46
D. n = 47
Answer: B
Mathematics
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Solve the problems.On Anne's bicycle, the ratio of pedal turns to rear-wheel turns in second gear is 4 to 7. If her rear wheel turns 679 times per mile, how many times does she turn the pedal in one mile?
A. 683 times B. 388 times C. 1,188.3 times D. 686 times
Mathematics
Use cross products to determine whether the pair of fractions is equivalent.- 
and - 
A. equivalent B. not equivalent
Mathematics
Solve the problem.Let f(x) = x-1.24 - x2.7. Approximate f(2.72) to the nearest hundredth.
A. x ? -14.35 B. x ? -14.62 C. x ? 1.73 D. x ? 3.39
Mathematics
Perform the conversion. Round to the nearest hundredth when necessary.22 km = ____ mi
A. 13.66 B. 23.32 C. 20.81 D. 35.42
Mathematics