All categories

2 years ago

Which number is rational?

Mathematics

2 answers:

ankoles [38]2 years ago

7 0

Answer:

3.1 is a rational number as it can be expressed as 31/10

√2 is an irrational number

√32 is the product of irrational and rational numbers, being equal to 4√2

4.142357... is presumably meant to represent an irrational number, although it could potentially be a rational one depending on what is in the ...

disa [49]2 years ago

4 0

Answer:

I think it's A.

hope this helps

have a good day :)

Step-by-step explanation:

You might be interested in

Patrick counts on to solve 9+?=16 Explain how he can do this. What is the missing addend? Enter your answers in the boxes. Patri

Ipatiy [6.2K]

Answer:

Step-by-step explanation:

9+7=16

Hope this helps

6 0

2 years ago

43.70 for a book the price of the book was 40 whats the tax rate

lora16 [44]

Are There Choices You Chose From?

3 0

3 years ago

The estimated answer to a multiplication problem is 800,000. Which of the following expressions could result in this answer? Exp

EastWind [94]

Answer:

8,146 x 121

Step-by-step explanation:

This is a problem in which you need to measure your understading of "orders of magnitude."

If the estimated answer is $800000$ that means that we are looking at a multiplication in the "order of" $8*10^5$

You need to look at the "orders of magnitude" of the things you're multiplying. In the first case, we have $8146*12$ that would be "of the order of" $8*10^3$ times $10^1$ . So the whole multiplication would "of the order of" $8*10^4$ or near $80000$

The correct answer, 8,146 x 121, is because it's "of the order of" $8*10^3$ times $10^2$ and the gives us the $8*10^5$ we need.

6 0

3 years ago

Points F,G, and H are collinear such that FG:FH=2/3.If a directed line segment begins at F(-3,2) and ends at H (-3,7), find the

Nana76 [90]

We consider the x- and y-coordinates separately. Let the coordinates of G be (x, y). Now considering the x-coordinates:
FG/FH = (x - (-3)) / (-3 - (-3)) = 2/3
x + 3 = (2/3)(6)
x = 1
For the y-coordinates:
FG/FH = (y - 2) / (7 - 2) = 2/3
y - 2 = (2/3)(5)
y = 16/3
Therefore the coordinates of G are (1, 16/3).

8 0

3 years ago

Considering the number of questions incorrect from classmates on a quiz {10, 11, 12, 13, 13, 13, 14, 15, 16, 16, 17, 18, 18, 19,

IrinaK [193]

Answer:

According to the Empirical Rule, 68% of the data should fall between 11.98 and 18.02

Step-by-step explanation:

We are given the following data in the question:

10, 11, 12, 13, 13, 13, 14, 15, 16, 16, 17, 18, 18, 19, 20

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{225}{15} = 15$

Sum of squares of differences = 25 + 16 + 9 + 4 + 4+ 4 + 1 + 0+ 1+ 1 + 4 + 9 + 9+ 16 + 25 = 128

$S.D = \sqrt{\dfrac{128}{14}} = 3.02$

Empirical rule:

According to this rule almost all the data lies within three standard deviation of the mean for a normal distribution.
About 68% of data lies within one standard deviation of the mean.
About 95% of data lies within two standard deviations of mean.
Arround 99.7% of data lies within three standard deviation of mean.

Thus, by empirical rule,

$\mu \pm 1\sigma = 15\pm (3.02) = (11.98,18.02)$

According to the Empirical Rule, 68% of the data should fall between 11.98 and 18.02

5 0

2 years ago