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jasenka [17]
3 years ago
5

2.5047754593 rounded 4 decimal places​

Mathematics
2 answers:
skad [1K]3 years ago
6 0

Answer:

2.5048

Step-by-step explanation:

the fourth decimal place of 2.5047754593 is the first seven.

to round take the next decimal to the right of the seven and determine if it is 0-4 or 5-9.    in this case it is 7 so it will go in the second catagory

so that means to round up instead of keeping the same number. so the seven becomes an eight and the rest of the numbers go away

hope i explained well! :)

vfiekz [6]3 years ago
5 0

Answer:

2.5048

Step-by-step explanation:

Hope this helped!

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The linear equation 3x-4y=8 is written in_______.
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Answer:

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Step-by-step explanation:

Ax + By = C ......which is what form this equation is in...is standard form

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Help me with this math problem i don’t understand it
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Answer:

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3 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

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Solutions for x2 −22x+121=49
slamgirl [31]
The answer is d I think
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