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melisa1 [442]
3 years ago
6

Most intruments produce notes across ranges called octaves which are made up of 8 notes how many octaves do 51 notes span?

Mathematics
1 answer:
mojhsa [17]3 years ago
8 0

Answer: 51 notes span 6 octaves.

Step-by-step explanation:

The word "octave" is a Latin word that means "eight".

In an instrument, Each octave is made up of 8 musical notes.

If we have 51 notes , the number of octaves can be made in it = \dfrac{51}{8}

=6.375\approx6\ \ \ \ \ \text{[Rounded to the nearest whole number]}

Hence, 51 notes span 6 octaves.

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Round this number to the given place values:
nataly862011 [7]

Answer:

Ones place: 456.3000

tenths place: 456.3000

hundredths place: 456.2990

thousandths place: 456.2991

5 0
3 years ago
. Exam scores for a large introductory statistics class follow an approximate normal distribution with an average score of 56 an
Andru [333]

Answer:

0.1% probability that the average score of a random sample of 20 students exceeds 59.5.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation \frac{\sigma}{\sqrt{n}}

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 56, \sigma = 5, n = 20, s = \frac{5}{\sqrt{20}} = 1.12

What is the probability that the average score of a random sample of 20 students exceeds 59.5?

This is 1 subtracted by the pvalue of Z when X = 59.5. So

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

Z = \frac{59.5 - 56}{1.12}

Z = 3.1

Z = 3.1 has a pvalue of 0.9990.

So there is a 1-0.9990 = 0.001 = 0.1% probability that the average score of a random sample of 20 students exceeds 59.5.

3 0
3 years ago
An assistant cook peeled 18 potatoes in 6 minutes. At this rate, how many potatoes can he peel in 50 minutes?
malfutka [58]

Answer:

150 potatoes

Step-by-step explanation:

Since the assistant can peel 18 potatoes in 6 minutes, we know that he can peel \frac{18}{6}=3 potatoes in 1 minute. Therefore, he will be able to peel 3*50=150 potatoes in 50 minutes. Hope this helps!

7 0
3 years ago
Read 2 more answers
A rectangular pyramid has a height of 10 meters. The base measures 8 meters in length and 12 meters in width. Two different tria
Colt1911 [192]

Answer:

The difference in the areas of the cross-sections is 20 m².

Step-by-step explanation:

^^^

6 0
2 years ago
The perimeter of a rectangular window is 364 cm If the lenth of window is 99 cm , what is its width?
Mumz [18]

width = 83 cm


Perimeter = 2(width) + 2(length)

So if l = 99 cm, and p = 364, then

364 = 2w + 2(99)

364 = 2w + 198

166 = 2w

w = 83 cm

7 0
3 years ago
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