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.

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Find all polar coordinates of point P = (9, 75°).

zubka84 [21]

Answer:

1) (9, 75+360n)

2) (−9, 255+360n)

Step-by-step explanation:

(9, 75) is same as (9, 75 + 360)

so it would be (9, 435)

It can also be expressed as (-9, 75 + 180 degrees)

so (-9,255) degrees

In general, (9,75+360 n) for n≥0 represents half of the possible ways of representing the point : (9,75)