Solve.5(2z - 4) = 9(z + 3)
A. 47
B. 7
C. -7
D. 12
Answer: A
Mathematics
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Verify the identity.sin 
= -cos ?
What will be an ideal response?
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Solve the equation.4x = 19 Round to three decimal places.
A. 1.558 B. 4.750 C. 2.124 D. 0.471
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The pitch, or frequency, of a vibrating string varies directly with the square root of the tension. If a string vibrates at a frequency of 600 hertz due to a tension of 3 pounds, find the frequency when the tension is 147 pounds. ? __________ hertz
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find the value of the unique real number ? between 0 and 2? that satisfies the given conditions.tan ? = 1 and sin ? < 0
A. 
B. 
C. 
D. 
Mathematics