The loudness of sound measured in decibels of a car stereo is given by  62.84x - 123.66 = 4(2.36 +2.4x), where x represents the decibels.  What is the decibel level of the stereo in the car?

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A: Given,mean(μ)=74standard deviation(σ)=4

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A: Given that mean life=20 years

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Q: The sound level of a normal conversation is about 60 dB. A concert is about 14,000 times as intense.…

A: The sound level of a normal conversation is given in decibel and we are asked to determine the sound…

Q: A submarine travels at elevation of 75 3/4 ft relative to sea level then it’s elevation changes by -…

A: This is elevation problem

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A: In this problem we have to find the magnitude of an earthquake. Here we use the following formula

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Q: d Prove thate* = e* from the first a %3D dx principles only definition, without using natural logs…

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Q: An airplane flying into an headwind travels the 2000mile flying distance between Ghana, Togo and…

A: Solution by using Gaussian elimination method as follows :

Q: A radioactive metal weighs 15 grams and loses 4% of its mass every hour. Write an expression that…

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Q: Number of man-hours and the corresponding productivity (in units) are furnished below. Fit a simple…

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Q: 9. x 12 18

A: We have to find the value of 'x'.

Q: (-9,2pi/3)

A:

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.