1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
storchak [24]
3 years ago
14

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
PLEASE HELP!!
Mathematics
2 answers:
Lorico [155]3 years ago
8 0
1.) <span>the ratio of the note A to middle C = 440.0 / 261.6 = 1.6820 ≈ 1.6818

2.) </span><span>the ratio of the note D to middle C = 293.7 / 261.6 = 1.1227

3.) </span><span>D# = 293.6 x 1.0595 = 311.1

4.) </span><span>the ratio of the frequency of G to C is 1 : 262/392 = 1 : 0.6683 ≈ 3 : 2

5.) </span><span>the ratio of the frequency of E to C = 1 : 262/330 = 1 : 0.7939 ≈ 5 : 4

6.) The </span><span>component in a musical note is referred to as the pitch of a sound is the frequency.</span>
Mariulka [41]3 years ago
7 0

Answer:

I am not going to steal your thunder by putting up the same answers, but all of them are correct.  Thanks for the help. :)

Step-by-step explanation:

You might be interested in
17.
eduard

Answer:  C. c = 23d + 11

I'm gonna go with c = 23d + 11

Step-by-step explanation:  c = 23d + 11

kikdddd

17 answers

2K people helped

its c hope that helps text me back if you want to know why it is.

...................................................................................................................................................

c is your answer

hope this helps

4 0
3 years ago
What’s 15.61 divided by 7
Marrrta [24]
2.23. your welcome lol
7 0
3 years ago
Read 2 more answers
We did not find results for: A measure of​ malnutrition, called the​ pelidisi, varies directly as the cube root of a​ person's w
asambeis [7]
\bf \qquad \qquad \textit{double proportional variation}\\\\&#10;\begin{array}{llll}&#10;\textit{\underline{y} varies directly with \underline{x}}\\&#10;\textit{and inversely with \underline{z}}&#10;\end{array}\implies y=\cfrac{kx}{z}\impliedby &#10;\begin{array}{llll}&#10;k=constant\ of\\&#10;\qquad  variation&#10;\end{array}\\\\&#10;-------------------------------\\\\

\bf \begin{cases}&#10;p=pedalisi\\&#10;w=weight\\&#10;s=\textit{sitting height}&#10;\end{cases}\quad &#10;\begin{array}{llll}&#10;%pelidisi, varies directly as the cube root of a​ person's weight in grams and inversely as the​ person's sitting height in centimeters.&#10;\textit{pelidisi varies directly}\\&#10;\textit{as cube root of weight}\\&#10;\textit{and inversely to }\\&#10;\textit{sitting height}&#10;\end{array}\implies p=\cfrac{k\sqrt[3]{w}}{s}\\\\&#10;-------------------------------

\bf \textit{we know that }&#10;\begin{cases}&#10;w=48,820\\&#10;s=78.7\\&#10;p=100&#10;\end{cases}\implies 100=\cfrac{k\sqrt[3]{48820}}{78.7}&#10;\\\\\\&#10;100\cdot 78.7=k\sqrt[3]{48820}\implies \cfrac{7870}{\sqrt[3]{48820}}=k&#10;\\\\\\&#10;thus\qquad \boxed{p=\cfrac{\frac{7870}{\sqrt[3]{48820}}\sqrt[3]{w}}{s}}&#10;\\\\\\&#10;\textit{now, what is \underline{p} when }&#10;\begin{cases}&#10;w=54,688\\&#10;s=72.6&#10;\end{cases}?\implies p=\cfrac{\frac{7870}{\sqrt[3]{48820}}\sqrt[3]{54688}}{72.6}

now, if that value is less than 100, then the fellow is "undernourished", otherwise, is overfed.
3 0
4 years ago
Alicia reads for 2 hours on Monday she reads for 56 minutes on Tuesday how many total minutes does she read on the two days
NeX [460]

Answer: 176 mins

Since 2 hours is 120 mins and 1 hour is 60 min. You have to add 56 and 120 which is 176 mins easy done.


7 0
3 years ago
According to the World Health Organization (WHO) Child Growth Standards, the head circumference for boys at birth is normally di
Elena L [17]

Answer:

z = \frac{X -\mu}{\sigma}

This z score tell to us how many deviations we are below or above the mean for a given normal distribution.

For the case of Eddie we got:

z= \frac{33.2-34.5}{1.3}= -1

And for the case of Sue we got:

z = \frac{32.7-33.9}{1.2}= -1

So then for both cases we see that Eddie and Sue are 1 deviation below the true mean for each gender so then the best conclusion for this case would be:

C.They are the same size relative to other children of the same sex.

Step-by-step explanation:

We can define the random variable X as the head circumference for boys at birth and we know that the distribution for X is given by:

X\sim N(\mu = 34.5, \sigma=1.3)

Similarly we can define the random variable Y as the head circumference for boys at birth and we know that the distribution for Y is given by:

Y\sim N(\mu = 33.9, \sigma=1.2)

And we know that Eddie was born with 33.2 cm and Sue with 32.7 cm for the head circumference . Since we are interested to determine which child's head circumference is smaller relative to other children of the same sex, we can use the z score formula given by this formula:

z = \frac{X -\mu}{\sigma}

This z score tell to us how many deviations we are below or above the mean for a given normal distribution.

For the case of Eddie we got:

z= \frac{33.2-34.5}{1.3}= -1

And for the case of Sue we got:

z = \frac{32.7-33.9}{1.2}= -1

So then for both cases we see that Eddie and Sue are 1 deviation below the true mean for each gender so then the best conclusion for this case would be:

C.They are the same size relative to other children of the same sex.

5 0
3 years ago
Other questions:
  • Figure A is a scale image of figure B Figure A maps to figure B with a scale factor of 4/9 What is the value of x?
    13·2 answers
  • Jessica has been tracking the population of a town. The population was 8,230 last year and has been increasing by 1.25 times eac
    6·1 answer
  • The data set represents the total number of people who bought bananas each hour at a grocery store 1,1,5,5,7,8,8,10,12
    7·1 answer
  • What decimal is equivalent to 6 %
    5·2 answers
  • A researcher posts a newspaper advertisement offering $20 in exchange for participation in a short study. The researcher accepts
    14·2 answers
  • also rented a truck for one day. there was a base fee of 20.99, and there was an additional charge of 85 cents for each mile dri
    13·1 answer
  • Sandy has 28 pencils and 72 erasers. She wants to make the greatest number of bags that have the same number of pencils and eras
    12·2 answers
  • Joaquin drew the triangle below.
    8·2 answers
  • Need help ASAP need done before 3:30
    7·1 answer
  • PLEASE HELP!!!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!