Simplify each side of the equation, if possible. Then solve the equation.
- 2 - 5 + 10 = 
- 3n + 6 + 4n
A. n = -28
B. n = 10
C. n = -40
D. n = -10
Answer: D
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Solve the problem.The sound produced by touching each button on a touch-tone phone is described by y = sin 2?lt + sin 2?htwhere l and h are the low and high frequencies (cycles per second) in the figure shown.
Describe the sound emitted by touching the 0 key as a product of sines and cosines.
A. y = 2 sin(536?t) cos(2418?t) B. y = 2 sin(395?t) cos(2277?t) C. y = 2 sin(2418?t) cos(536?t) D. y = 2 sin(2277?t) cos(395?t)
Find the missing measurement in the figure.
a = 0.83 b = 0.1 cm c = 1 cm
A. z = 0.17 cm B. z = 0.27 cm C. z = 0.07 cm D. z = 1.73 cm
Find the product AB.A = 
, B = 
A.
[-13 49]
B. 
C. 
D. 
Use the product rule, if possible, to simplify the expression. Write the answer in exponential form.(-8)(-8)4(-8)(-8)(-8)3
A. (-8)10 B. (-8)12 C. (-8)7 D. -810