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Mathematics, 21.06.2019 13:30
The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).
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Mathematics, 21.06.2019 14:50
What is the square root of 45? (step by step working plz)
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Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income
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Mathematics, 21.06.2019 15:30
What is the value of x? enter your answer in the box. photo attached.
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If a = 7, what is the value of the expression 2(a + 8)?...
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