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vovikov84 [41]
3 years ago
13

Is 2 a prime or composite number?

Mathematics
2 answers:
defon3 years ago
5 0
2 is a prime number. hope this hepls

Nikolay [14]3 years ago
4 0
It is a prime number,
its only factors are 1 and itself
You might be interested in
How do I solve 2f+10?
Scorpion4ik [409]
First of all, you want the variable to be isolated, so in order to do that, you divide in both sides. Ten divided by two is five. So f = 5.

2f + 10
---    ---
2      2

10 divided by 2 = 5
5 0
3 years ago
Read 2 more answers
Which sentence can represent the inequality 2.4 (6.2 minus x) greater-than negative 4.5?
-BARSIC- [3]

Answer: Choice B

Two and four tenths multiplied by the difference of six and two tenths and a number is more than negative four and five tenths.

======================================================

Explanation:

2.4 = 2 + 0.4

2.4 = 2 and 4/10

2.4 = 2 and 4 tenths

2.4 = two and four tenths

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

Through similar reasoning,

6.2 = six and two tenths

And also,

-4.5 = negative four and five tenths

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

Notice how 6.2 - x translates into "difference of six and two tenths and a number"

We then multiply that by 2.4, aka two and four tenths.

So that's how we get the phrasing "Two and four tenths multiplied by the difference of six and two tenths and a number"

All of this is greater than -4.5 aka negative four and five tenths.

This points us to Choice B as the final answer.

7 0
3 years ago
Read 2 more answers
Find two consecutive odd integers the sum of whose squares is 130.
saw5 [17]
7 and 9

7^2=49
9^2=81

49+81=130
3 0
3 years ago
What set of ordered pairs represents y as a function of x?
rusak2 [61]
The set {(1, 2), (2, -3), (3, 4), (4, -5)} represents y as a function of x
Question 2:
The best statement describes the relation is "The relation represents y as a function of x, because each value of x is associated with a single value of y" ⇒ 3rd answer
Question 4:
There are missing options so we can not find the correct answer
Question 5:
The sets {(1 , 1), (2 , 2), (2 , 3)} and {(1, 2), (1, 3), (1, 1)} do not represent y as a function of x ⇒ 1st and 4th answers
Step-by-step explanation:
The relation is a function if each value of x has ONLY one value of y
Ex: The set {(3 , 5) , (-2 , 1) , (4 , 3)} represents y as a function of x because x = 3 has only y = 5, x = -2 has only y = 1, x = 4 has only y = 3
The set {(4 , 5) , (-2 , 1) , (4 , 3)} does not represent y as a function of x because x = 4 has two values of y 5 and 3
3 0
3 years ago
Imagine you're a researcher and you need to perform a two-sided test of an alternative hypothesis. You decide to conduct a signi
Sophie [7]

Answer:

B. You should not take the statistician’s advice. Hypothesis testing relates to a single conclusion, while a confidence interval provides a range of plausible values for your population.

Step-by-step explanation:

Hello!

A statistical hypothesis is an assertion or specification about the distribution of a random variable X, and, more specifically, about the parameters that characterize it. The objective of the hypothesis test is, therefore, to test the researcher's belief about the possible value of the parameter under study and obtain significant evidence to accept or reject it.

The objective of a Confidence interval is to estimate a possible range of values for the population parameter you are studying. If the confidence level is of 95%, this means that if you were to make 100 confidence intervals, you'd expect 95 of them to contain the true value of the parameter. But only with the confidence interval you cannot make any valid assertion about the parameter value.

In this case the study parameter is μ₁ - μ₂

The hypothesis is:

H₀: μ₁ - μ₂ = 0

H₁: μ₁ - μ₂ ≠ 0

α 0.05

One of three valid methods to decide an hypothesis test is using a Confidence Interval. To do so the following conditions are to be met:

The hypothesis and CI should be made for the same population parameter.

The hypothesis should be two-tailed.

The signification level of the test "α" and confidence level of the interval "1 - α" have to be complementary.

For both is to be used the data from the same sample and same statistic.

If this conditions are met, the decision rule is:

If the value of the study parameter under the null hypothesis is included in the confidence interval, then you do not reject the null hypothesis.

If the value is not included in the interval, then you reject the null hypothesis.

To make a decision you need to do both, the interval and the two-tailed hypothesis.

I hope this helps!

3 0
3 years ago
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