All categories

3 years ago

Can someone explain to me what prime numbers are?

2 answers:

7 0

A prime number is a number greater than one and can only be divided by 1 and itself. The result is always a whole number, i.e. no fractions, decimals, remainders.

Example: 
2 can only be divided by 1 and itself 
3 can only be divided by 1 and itself. 

4 however, can be divided by 1 or 2 or itself 

1 is not a prime number since it is not greater than one.

Zinaida [17]3 years ago

4 0

Prime numbers are positive integers that cannot be factored. Meaning it cannot be divided by any other number but 1 and itself.

For example:
2 is a prime number. It can only be divided by 1 and 2.
4 is not a prime number. Because it can be divided by 1, 2, and 4.

Take note: prime numbers are POSITIVE integers only.

Additional information about prime numbers:
* The only even prime number is 2. The rest even number are not prime numbers because it can be divided by 2.
* zero and 1 are not considered prime numbers
* numbers that are not prime numbers are called composite numbers.

You might be interested in

Answer the questions below in your own handwriting. Typed responses will not be accepted. When you are finished, scan/save this

Dmitry [639]

Answer:

Lawns ---Earnings

1 ----------------- 10

2 ----------------- 20

3 ----------------- 30

5 ----------------- 50

Step-by-step explanation:

Given

Earnings = $10 per lawn

Required

Complete the table

Let y be the earnings for x number of lawns

Since he earns $10 per x lawns, then the expression is:

$y = 10x$

To complete the table, we have the following:

When x = 1

$y = 10 * 1 = 10$

When x = 2

$y = 10 * 2 = 20$

When x = 3

$y = 10 * 3 = 30$

When x = 5

$y = 10 * 5 = 50$

So, the complete table is:

Lawns ---Earnings

1 ----------------- 10

2 ----------------- 20

3 ----------------- 30

5 ----------------- 50

5 0

2 years ago

Amy needs to write a definition of an angle. Which words will she need for a precise definition with sufficient information?

hichkok12 [17]

the space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet

7 0

3 years ago

Read 2 more answers

Express the confidence interval (0.432, 0.52 in the form of ± e.

lakkis [162]

For a known standard deviation, the confidence interval for sample size = n is
$(x-z \frac{ \sigma }{ \sqrt{n}},x+x \frac{ \sigma }{ \sqrt{n} } )$
where
x = average
n = sample size
$\sigma$ = stad. deviation
z = contant that reflects confidence interval

Let a = x
Let b = $z \frac{ \sigma }{ \sqrt{n} }$

From the given information,
a - b = 0.432 (1)
a + b = 0.52 (2)

Add (1) and (2): 2a = 0.952 => a = 0.476
Subtract (2) from (1): -2b = -0.088 => b = 0.044

Therefore, the confidence interval may be written as
(0.476 - 0.044, 0.476 + 0.044), or as
(0.476 $\pm$ 0.044)

4 0

3 years ago

The first row of seats in Section G of a baseball stadium has 5 seats . There is a total of 20 rows of seats in the section . If

RoseWind [281]

Answer:

140

Step-by-step explanation:

8 0

2 years ago

What is the summation notation for the series? 200+175+150+125+___+(-300)

ozzi

21
E (225-25n)
n=1
So its D.