The loudness of a sound of intensity x, measured in watts per square meter, is defined as L(x) = log (
), where xo = 10-3.At a rock concert by The Who, the music registered a loudness level of 120 decibels. The human threshold of pain due to sound averages 130 decibels. Compute the ratio of the intensities associated with these two loudness level to determine by how much the intensity of a sound that crosses the human threshold of pain exceeds that of this particular rock concert.
What will be an ideal response?
The intensity of a sound that crosses the human threshold of pain is 10 times as intense as this rock concert.
Mathematics
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Find the real solutions, if any, of the equation. Use the quadratic formula.3x2 + x - 1 = 0
A. 
B. 
C. no real solution
D. 
Mathematics
Simplify by first removing the parentheses and then combining the like terms.
What will be an ideal response?
Mathematics
Perform the indicated operation.(-3k + 1)(k - 7)
A. -3k2 - 7k + 22 B. -3k2 + 22k + 22 C. -3k2 + 20k - 7 D. -3k2 + 22k - 7
Mathematics
A Social Security number is a sequence of nine digits. How many Social Security numbers are possible that have the same first 6 digits?
Fill in the blank(s) with the appropriate word(s).
Mathematics