alanizyc
14.08.2020 •
Mathematics
The decibel level of the sound from a certain hair dryer is measured at 60 dB. Find the intensity of the sound. (Give your answer in scientific notation.)
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Ответ:
11 15 15/x
Jonah spent the cost of a movie ticket and split the cost of popcorn, so this needs to be represented by a " + ". Jonah just buy one piece tickets, so 11 is tickets price. We know Jonah's costs represented by the expression 11+15/x, "x" on behalf of the number of he and his friends, so 15 is the price of popcprn. 15/x means one person's money for the poopcorn, including Jonah.