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7nadin3 [17]
3 years ago
13

Click on the volume of this cube.

Mathematics
2 answers:
musickatia [10]3 years ago
5 0
512, the formula for volume is length x width x height :)
Vedmedyk [2.9K]3 years ago
3 0

Answer: C

Step-by-step explanation:

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What is the slope of c=3.95p
Vladimir79 [104]
The answer is m=3.95
8 0
3 years ago
The test scores on a 100-point test were recorded for 20 students:71 93 91 86 7573 86 82 76 5784 89 67 62 7277 68 65 75 84a. Can
Dafna11 [192]

Answer: a. Yes

              b. mean = 76.65

                  standard deviation = 10.04

              c. 76.65 ± 4.4

Step-by-step explanation:

a. <u>Stem</u> <u>and</u> <u>leaf</u> <u>Plot</u> shows the frequencies with which classes of value occur. To create this plot, we divide the set of numbers into 2 columns: <u>stem</u>, the left column, which contains the tens digits; <u>leaf</u>, the right column, which contains the unit digits.

<u>Normal</u> <u>distribution</u> is a type of distribution: it's a bell-shaped, symmetrical, unimodal distribution.

A stem and leaf plot displays the main features of the distribution. If turned on its side, we can see the shape of the data.

The figure below shows the stem and leaf plot of the 100-point test score. As we can see, when turned, the plot resembles bell-shaped distribution. So, this test scores were selected from a normal population.

b. <u>Mean</u> is the average number of a data set. It is calculated as the sum of all the data divided by the quantity the sample has:

mean = \frac{\Sigma x}{n}

For the 100-point test score:

mean = \frac{71+93+91+...+65+75+84}{20}

mean = 76.65

<u>Standard</u> <u>Deviation</u> determines how much the data is dispersed from the mean. It is calculated as:

s=\sqrt{\frac{\Sigma (x-mean)^{2}}{n-1} }

For the 100-point test score:

s=\sqrt{\frac{[(71-76.65)+(93-76.65)+...+(84-76.65)]^{2}}{20-1} }

s = 10.04

The mean and standard deviation of the scores are 76.65 and 10.04, respectively.

c. <u>Confidence</u> <u>Interval</u> is a range of values we are confident the real mean lies.

The calculations for the confidence interval is

mean ± z\frac{s}{\sqrt{n} }

where

z is the z-score for the 95% confidence interval, which is equal 1.96

Calculating interval

76.65 ± 1.96.\frac{10.04}{\sqrt{20} }

76.65 ± 4.4

The 95% confidence interval for the average test score in the population of students is between 72.25 and 81.05.

7 0
3 years ago
Find the value of x that makes A || B.<br> x=?
Norma-Jean [14]

Answer:

78

Step-by-step explanation:

a

7 0
3 years ago
The local water park has decreased its ticket prices every summer to get more people to come.
statuscvo [17]

Answer:$24 on 2016

Step-by-step explanation:

2012 = $30

2015 = $25.50

30.00-25.50=4.50

$4.50

so,3 years different, so that 4.50/3 years = $ 1.50

7 0
3 years ago
Tyrone has 16 model airplanes on his shelf. He has 4 times as many model airplanes as model trains. How many model trains does T
garri49 [273]

16 model airplanes on his shelf

4 times as many model airplanes as model trains

let's denote the number of model trains as m

So,

m=16×4

m=64

Therefore,there are 64 model trains.

pleasemark me as brainliest answer

4 0
2 years ago
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