1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nydimaria [60]
2 years ago
15

Explain if 12.1 is rational or irrational

Mathematics
1 answer:
Naddika [18.5K]2 years ago
6 0
It is rational because it is a terminating decimal. It can be represented as a ratio of two integers (121/10)
You might be interested in
What is the rate of change of the function?
Gnoma [55]

Answer:

The answer would be negative 1

Step-by-step explanation:

The reason why it is negative one is because you line them up and yeah.

3 0
2 years ago
There are n machines in a factory, each of them has defective rate of 0.01. Some maintainers are hired to help machines working.
frosja888 [35]

Answer:

a) 1 - ∑²⁰ˣ_k=0 ((e^-λ) × λ^k) / k!

b) 1 - ∑^(80x/d)_k=0 ((e^-λ) × λ^k) / k!

c) ∑²⁰ˣ_k=0 (3^k)/k! = 0.99e³

Step-by-step explanation:  

Given that;

if n ⇒ ∞

p ⇒ 0

⇒ np = Constant = λ,  we can apply poisson approximation

⇒ Here 'p' is small ( p=0.01)

⇒ if (n=large) we can approximate it as prior distribution

⇒ let the number of defective items be d

so p(d) = ((e^-λ) × λ) / d!

NOW

a)

Let there be x number of repairs, So they will repair 20x machines on time. So if the number of defective machine is greater than 20x they can not repair it on time.

λ[n0.01]

p[ d > 20x ] = 1 - [ d ≤ 20x ]

= 1 - ∑²⁰ˣ_k=0 ((e^-λ) × λ^k) / k!

b)

Similarly in this case if number of machines d > 80x/3;

Then it can not be repaired in time

p[ d > 80x/3 ]

1 - ∑^(80x/d)_k=0 ((e^-λ) × λ^k) / k!

c)

n = 300, lets do it for first case i.e;

p [ d > 20x } ≤ 0.01

1 - ∑²⁰ˣ_k=0 ((e^-λ) × λ^k) / k! = 0.01

⇒ ∑²⁰ˣ_k=0 ((e^-λ) × λ^k) / k! = 0.99

⇒ ∑²⁰ˣ_k=0 (λ^k)/k! = 0.99e^λ

∑²⁰ˣ_k=0 (3^k)/k! = 0.99e³

8 0
2 years ago
Which ones are polynomials? Plz hurry
Gekata [30.6K]

Answer:

that don't matter just the pre test if u get a good grade on a pre test you don't got ot do the lesson.

Step-by-step explanation:

7 0
3 years ago
The perimeter of a rectangular field is 358 yards. If the length of the field is 95 yards, what is it’s width?
Andrej [43]

Answer:

84 yards (don't forget to label, as my friend failed a test because of it!)

Hope this helps

Step-by-step explanation:

The total perimeter of the field is 358

The are length and widths...

the length is 95

but since there are two lengths...

its 95*2 which is 190

358-190=168

Since there are two widths...

168/2= 84

7 0
2 years ago
Read 2 more answers
If the 9th day of a month is on tuesday on what day is 25th
Mila [183]
That will be in a thursday
6 0
3 years ago
Other questions:
  • I paid $7. 74 in county sales taxes. The tax rate is 3%
    10·1 answer
  • Rashad is having a picnic for 62 guests. He plans to serve each guest at least one hamburger. If each package, p, contains eight
    15·1 answer
  • Will give brainliest if right
    9·1 answer
  • Approximately 7.5 x <img src="https://tex.z-dn.net/?f=10%5E%7B5%7D" id="TexFormula1" title="10^{5}" alt="10^{5}" align="absmiddl
    6·1 answer
  • Traveling at 65 miles per hour, approximately how long will it take for Marcus to drive 310 miles
    6·2 answers
  • Find the equivalent measures 7 m 45 cm =
    11·2 answers
  • What is the value of x?
    10·1 answer
  • Estimate 17.154+5.46 by rounding each number to the nearest tenth
    6·1 answer
  • Plz help with all of these and I will give the best answer the brainiest Thx
    11·2 answers
  • Does someone mind helping me with this question? Thank you!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!