Factor the trinomial, or state that the trinomial is prime.9x2 + 18xt + 8t2
A. prime
B. (9x + 2t)(x + 4t)
C. (3x - 2t)(3x - 4t)
D. (3x + 2t)(3x + 4t)
Answer: D
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Convert the decimal to percent notation..1752
A. 175.2% B. 1.752% C. .01752% D. 17.52%
Multiply and simplify. Assume all variables represent nonnegative real numbers. Write your answer in radical notation.
A. (m + 7)6
B. (m + 7)6
C. (m + 7)7
D. (m + 7)7
Use Gaussian elimination to solve the system of equations.x - y + z = -8x + y + z = 0x + y - z = 2
A. (-3, -1, 4) B. (-3, 4, -1) C. No solution D. (-1, -3, 4)
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 * key as a product of sines and cosines.
A. y = 2 sin(536?t) cos(2418?t) B. y = 2 sin(2277?t) cos(395?t) C. y = 2 sin(2418?t) cos(536?t) D. y = 2 sin(395?t) cos(2277?t)