Mathematics
Mathematics, 11.10.2019 07:30, khristaviaaa

1. the c major key, starting with the middle c, consists of seven notes (white keys on the piano) with the following frequencies.
note; c d e f g a b
frequency; (hz) 261.6 / 293.7 / 329.6 / 349.2 / 392.0 / 440.0 / 493.9
determine the ratio of the note a to middle c.
a. 1.6818
b. 1.4983
c. 1.5348
d. 1.3654
2.the c major key, starting with the middle c , consists of seven notes (white keys on the piano) with the following frequencies.
note: c d e f g a b
frequency(hz): 261.6 / 293.7 / 329.6 / 349.2 / 392.0 / 440.0 / 493.9
determine the ratio of the note d to middle c.
a. 1.1227
b. 1.4566
c. 1.234
d. 1.3454
3. when an octave is divided into twelve equal steps, a chromatic scale results. the ratios between sucessive notes is constant.
c- 261.6 c#-277.2 d- 293.6 d#- ? e-329.6 f- 249.2 f#-370.0 g-392.0 g#- ? a-440 a#-466.1 b- 493.8 c-523.2
determine the missing frequency for d# using the ratio 1.0595. round to the nearest tenth.
a. 311.0
b. 415.3
c. 311.1
d. 625.2
4. a chord consists of notes that sound good together. the c major chord, starting at middle c, has the following frequencies:
c - 262 hz
e - 330 hz
g - 392 hz
determine the ratio of the frequency of g to c. express the answer in a simple integer ratio. (due to rounding the ratio will be approximate.)
a. 5 to 4
b. 3 to 2
c. 6 to 5
d. 9 to 8
5. a chord consists of notes that sound good together. the c major chord, starting at middle c, has the following frequencies:
c - 262 hz
e - 330 hz
g - 392 hz
determine the ratio of the frequency of e to c. express the answer in a simple integer ratio. (due to rounding the ratio will be approximate.)
a. 5 to 4
b. 3 to 2
c. 6 to 5
d. 9 to 8
6.which component in a musical note is referred to as the pitch of a sound?
a. wavelength
b. frequency
c. time
d. distance

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