All categories

3 years ago

Is 9/31 an irrational number

Mathematics

2 answers:

elena55 [62]3 years ago

5 0

Answer:No

Step-by-step explanation:

tatyana61 [14]3 years ago

5 0

Answer:

No, 9/31 is not an irrational number.

Step-by-step explanation:

A real number is called rational number when it can be expressed in the form of $\frac{p}{q}$ ,

Where, both p and q are integers and q ≠ 0,

Otherwise, it is called irrational number.

Here, the given number is,

$\frac{9}{31}$

Since,both 9 and 31 are integers,

Also, 31 ≠ 0,

⇒ 9/31 is a rational number,

Hence, It is not an irrational number.

You might be interested in

In the equation (x^2+y)^5, what is the coefficient of the term x^4y^3? what is the coefficient of the same term in the expansion

lys-0071 [83]

$\displaystyle
(x+y)^n=\sum_{k=0}^n\binom{n}{k}x^{n-k}y^k$

-------------------------------------------------------------

$\displaystyle
(x^2+y)^n=\sum_{k=0}^n\binom{n}{k}x^{2n-2k}y^k\\
n=5\\
k=3\\\\\binom{5}{3}=\dfrac{5!}{3!2!}=\dfrac{4\cdor5}{2}=10$

It's 10.

----------------------------------------------------

$\displaystyle
(3x^2+y)^n=\sum_{k=0}^n\binom{n}{k}(3x)^{2n-2k}y^k=\sum_{k=0}^n\binom{n}{k}\cdot 3^{2n-2k}\cdot x^{2n-2k}y^k\\\\
n=5\\
k=4\\\\
\binom{5}{3}\cdot3^{2\cdot5-2\cdot4}=10\cdot3^{2}=10\cdot9=90$

It's 90

6 0

3 years ago

270 american dollar and recevied 3000 pesos when he returned from mexico he had 100 pesos left. how many will he recevie when he

AURORKA [14]

To solve this problem we can use simple proportion
If
270$ -------------------------3000 pesos
x $ ---------------------------100 pesos (x$ means that we dont know how much)
Now we crossmultiplying to get proportion
x*3000=270*100
Now we just to solve eq
3000x=27000 /:3000
x=27000:3000
x=9$ - its the result

7 0

2 years ago

I need help on question #1 asap

bekas [8.4K]

The answer is three. divide 48 by any number under 6 if there a decimal they don't count if there answer is over 20 it doesn't count

3 0

2 years ago

Read 2 more answers

625 625 revolutions in 223 223 seconds

Eva8 [605]

What exactly are you asking for....?

5 0

3 years ago

A mega-discount chain store just opened a new clothing store in town emphasizing mainly women's clothing. Before opening, man

Georgia [21]

Answer:

a) Cluster sampling

Step-by-step explanation:

Since here the population is divided into many groups (cluster) and one of these groups is taken as a sample. This type of sampling is called Cluster Sampling.

Further,

In Cluster Sampling the population is distributed into a distinct group called cluster and clusters are chosen as a sample then it is Cluster Sampling.

Multistage Sampling is a complex form of Cluster Sampling. In this sampling population is divided into a different group then one or more groups are randomly selected then again that selected group is divided into a different small group and again one or more these small groups are randomly selected as sample. This process is done many times.

If the sampling is done by any criteria then this type of sampling method is called Systematic Sampling. Like observer is taken every 5th unit as a sample.

If the whole population is divided into many groups(strata) such that between the group units are heterogeneous and within the group units are homogeneous then units are randomly selected from these groups. This type of sampling is called Stratified Sampling.

7 0

3 years ago