Solve the equation.
+ 9 = 
A. 
B. 
C. - 
D. - 
Answer: D
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Is ?D a vertex angle?
Multiply.(-0.8)(-13.0)
A. 1.04 B. 104 C. 10.4 D. 0.104
Solve the problem.On a Touch-Tone phone, each button produces a unique sound. The sound produced is the sum of two tones, given by y = sin (2?lt) and y = sin (2?ht)where l and h are the low and high frequencies (cycles per second) shown on the illustration.
The sound produced is thus given by y = sin (2?lt) + sin (2?ht)Write the sound emitted by touching the 4 key as a product of sines and cosines.
A. y = 2 sin (439?t) cos (1,979?t) B. y = 2 sin (2,106?t) cos (566?t) C. y = 2 sin (566?t) cos (2,106?t) D. y = 2 sin (1,979?t) cos (439?t)
Solve the problem.Find the perimeter of the figure shown below.
A. 15.94 cm B. 22.24 cm C. 14.77 cm D. 8.47 cm