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My name is Ann [436]
3 years ago
10

Is the number 3 a rational number?

Mathematics
2 answers:
Evgesh-ka [11]3 years ago
6 0

Answer:

in fact yes

Step-by-step explanation:

it is since it's actually a normal number

VikaD [51]3 years ago
5 0

Answer:

Yes.

Step-by-step explanation:

The number 3 is a <u>natural number</u>, and all of these types of numbers are rational.

Another way to look at it is if a number can be <u>written as a fraction</u>, the number is rational.

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8x+7x+5+4= 39 pls help quickly
Rudik [331]

Answer:

x = 2

Step-by-step explanation:

8x + 7x + 5 + 4 = 39

15x + 9 = 39

15x = 30

x = 2

Brainly plz :))

4 0
3 years ago
Explain how to tell 202/220 is not in simplest form
Yuri [45]

Answer:

An easy way to tell with a number like this is that both numbers are round, so they can both be divided by 2

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
What are the conditions a sample needs to meet before you can assume it's binomial and that it approximates a normal distributio
Gemiola [76]

Answer:

1) np\geq 5

2) nq = n(1-p)\geq 5

Other conditions that are important are:

3) n is large

4) p is close to 1/2 or 0.5

Step-by-step explanation:

1) Previous concepts  

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".  

2) Solution to the problem

Let X the random variable of interest, on this case we now that:  

X \sim Binom(n, p)  

The probability mass function for the Binomial distribution is given as:  

P(X)=(nCx)(p)^x (1-p)^{n-x}  

Where (nCx) means combinatory and it's given by this formula:  

nCx=\frac{n!}{(n-x)! x!}  

In order to apply the normal apprximation we need to satisfy these two conditions:

1) np\geq 5

2) nq = n(1-p)\geq 5

Other conditions that are important are:

3) n is large

4) p is close to 1/2 or 0.5

8 0
3 years ago
Can someone help me 3y-20=8y
Bess [88]
Objective: Solve 3y - 20 = 8y for y.

Step 1: Collect the y-terms.
To collect the y-terms, you'll need to subtract 3y from both sides.

3y - 20 - 3y = 8y - 3y
             -20 = 5y

Step 2: Isolate y.
Now that there is only one variable term, you must isolate the variable by dividing the term by the coefficient of the variable.

-20 ÷ 5 = 5y ÷ 5
        -4 = y

Answer:
y = -4
7 0
3 years ago
For the function f(x)={−x+3,x&gt;02x+3,x≤0, what is the average rate of change over the interval 1 ≤ x ≤ 3?
Nikitich [7]

Answer:

3432

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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