Match the given equation with one of the graphs.x2 + y2 + 4x + 4y = 0
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve.The pitch P of a musical tone varies inversely as its wavelength W. One tone has a pitch of 221 vibrations per second and a wavelength of 15.8 ft. Find the wavelength of another tone that has a pitch of 213 vibrations per second. Round to the nearest hundredths when necessary.
A. 0.06 ft B. 2979.3 ft C. 16.39 ft D. 1.64 ft
Mathematics
Use the order of operations to simplify the expression.3 ? 8 + 72
A. 31 B. 1176 C. 60 D. 73
Mathematics
Solve.
- 2 = 13
A. -10, 10 B. 16, 10 C. -20, 10 D. -6, 10
Mathematics
Simplify the complex fraction.
A. 
B. 
C. 
D. 
Mathematics