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2 years ago

The numbers are all 3, I think

Mathematics

2 answers:

Salsk061 [2.6K]2 years ago

8 0

Volume of a cube = a³

= 3 x 3 x 3
= 27

Hope it helps you

natali 33 [55]2 years ago

3 0

Answer:

27 cubic units

Step-by-step explanation:

Volume = length • width • height

3 • 3 • 3 = 27 (Break it down by solving 3 • 3 = 9. Then 9 • 3 = 27)

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In yoga class, all of the students are lined up according to height. Andy notices that the number of students who are taller tha

hichkok12 [17]

Answer:

The number of students in the class is 21

Step-by-step explanation:

The first thing to consider is Andy.

Let x be the number of students who are taller than Andy.

Then the number of the rest students, excluding Andy, is 4x, according to the condition.

So, the total number of students in the class is (x + 4x + 1), or 5x+1.

Next, consider Violetta.

Let y be the number of students who are shorter than Violetta.

Then the number of the rest students, excluding her, is 3y, according to the condition.

So, the total number of students in the class is (y + 3y + 1), or 4y+1.

We see, that the number of students in the class MINUS one is a multiple of 4 (four) and of 5 (five), at the same time.

So, the number of students in the class is EITHER 20+1 = 21 OR 40+1 = 41, if consider couple of minimal values.

But 41 is excluded by the condition, leaving a UNIQUE ANSWER:

The number of students in the class is 21.

6 0

2 years ago

Find the approximate volume of a cone with radius 10 inches and a vertical height of 24 inches. ANSWERS: 414,565 in3 2,513 in3 6

OLEGan [10]

Answer:2,513in3

Step-by-step explanation:

7 0

3 years ago

25 decreased four times n

disa [49]

The answer is 4n-25
4 times n is 4 n

and 25 decreased or subtracted from the 4n
thus the answer is 4n-25

8 0

2 years ago

Read 2 more answers

Assume that you have paired values consisting of heights (in inches) and weights (in lb) from 40 randomly selected men. The li

HACTEHA [7]

Answer:

$R^2 = r^2 = 0.445^2= 0.198$

B. The coefficient of determination is 0.1980, 19.8% of the variation is explained by the linear correlation, and 80.2% is explained by other factors.

Step-by-step explanation:

Previous concepts

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

Solution to the problem

In order to calculate the correlation coefficient we can use this formula:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

On this case we got that r =0.445

The determinaton coefficient is just:

$R^2 = r^2 = 0.445^2= 0.198$

And we can put it on % and we got 19.8%. And represent the variation explained by a linear model. The best option on this case would be:

B. The coefficient of determination is 0.1980, 19.8% of the variation is explained by the linear correlation, and 80.2% is explained by other factors.

Since the explained variation is 19.8% and the remain 100-19.8= 80.2% is explained by other factors.

6 0

2 years ago

if you deposit 4500 at 5% annual interest compounded annually how much money will be in the account after 30 months

Alja [10]

Answer:

A = $ 50,978.44

Step-by-step explanation:

First, convert R percent to r a decimal

r = R/100

r = 5%/100

r = 0.05 per year,

Then, solve our equation for A

A = P(1 + r/n)nt

A = 45,000.00(1 + 0.004166667/12)(12)(2.5)

A = $ 50,978.44

8 0

3 years ago