Solve the problem.The ratio of the lengths of strings that play the notes D and B is 27 to 16. If a string 64 cm long plays a B, what is the length of the string that plays a D?
A. 64 cm
B. 91 cm
C. 108 cm
D. 80 cm
Answer: C
Mathematics
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Find the average of the numbers.Find the average of the list of Celsius temperatures. -13°, -7°, -3°, -4°, 0°, and -9°C
A. -4°C B. -6°C C. -5°C D. -7°C
Mathematics
The graph shows the sales, in thousands of dollars, for a small business over a twelve month period. Use the graph to answer the question. 
What were the sales for Month 9?
A. $48,000 B. $50,000 C. $52,000 D. $46,000
Mathematics
Solve the equation.
- 
= 
A. {11}
B. {-11}
C. {
}
D. {44}
Mathematics
Solve the equation for all complex solutions, giving exact forms in your solution set.x3 + 5x2 + 49x + 245 = 0
A. {-5, -7i, 7i}
B. {-5, 245i, 49i}
C. {-5, -
, -
}
D. {-
, -
, 7i}
Mathematics