Simplify the expression. Assume all variables represent positive numbers.
- 
A. -1
B. 0
C. - 
D. -6
Answer: B
Mathematics
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What kind of angle is ?CBD?
(a) obtuse
(b) acute
(c) equilangular
(d) right
Mathematics
Solve.The frequency F of a vibrating string varies inversely as its length L. A particular violin string is 25.8 cm long and vibrates at 440 Hz. What length of that string will vibrate at 
Round your answer to the nearest tenth.
A. 28.8 cm B. 92.3 cm C. 23.1 cm D. 524.4 cm
Mathematics
Find a simplified value for x by inspection. Do not use a calculator.
?
?
x = __________
Fill in the blank(s) with the appropriate word(s).
Mathematics
The graph of a piecewise-defined function is given. Write a definition for the function. 
A. 
B. 
C. 
D. 
Mathematics