Mathematics, 26.06.2019 15:30 jrassicworld4ever
Louise is building a guitar-like instrument. it has small metal bars, called frets, positioned across its neck so that it can produce notes of a specific scale on each string. the distance a fret should be placed from the bridge is related to the string’s root note length by the function d(n) = r ( 2^-n/12 ), where r is the length of the root note string and n is the number of notes higher than the string’s root note. louise wants to know where to place frets to produce notes on a 50-cm string. 1. find the distance from the bridge for a fret that produces a note exactly one octave (12 notes) higher than the root note . a . substitute values for r and n in the given function . b . how far from the bridge should the fret be placed? c . what fraction of the string length is the distance of this fret from the bridge?
Answers: 1
Mathematics, 21.06.2019 21:00
Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.
Answers: 1
Mathematics, 21.06.2019 22:20
As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is
Answers: 2
Louise is building a guitar-like instrument. it has small metal bars, called frets, positioned acros...
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