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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 16:40
Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u
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Mathematics, 21.06.2019 17:30
Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?
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Mathematics, 21.06.2019 18:30
1.two more than the quotient of a number and 6 is equal to 7 use the c for the unknown number translate the sentence into an equation
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