Solve the problem.The loudness L of a sound of intensity I is defined as ?where L = the loudness of the sound as measured in decibels and I0 = the minimum intensity detectable by the human ear. Find L for a sound whose intensity, I, is 105.4 I0.

A. 496.8 decibels
B. 0.7 decibels
C. 124.3 decibels
D. 54 decibels


Answer: D

Mathematics

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Write the equation for the plane.The plane passing through the points (1, 2, 6), (-1, 4, 0), and (3, 1, 5).

A. 9x - 2y + 8z = 53 B. 6x + 11y - z = 22 C. 4x + 7y + z = 24 D. 2x + 4y + 5z = 40

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Perform the matrix operation.  +  =

A.
B.  
C.
D. Not defined

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Provide an appropriate response.Solve the system of equations using the substitution method: 2x - 3y = 8-x + 4y = -14

A.

(4, 0)


B.

(-2, -4)


C.

(2, -3)


D.

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Find the absolute value of the complex number.z = 2i

A. 2 B. -2 C. 0 D. 4

Mathematics