Pi questions! :

1. what is the number meaning of π?
2. when is the official π day?
3. is π a rational or irrational number?

1. 3.14...

2. March 14

3. irrational

1. Pi is usually expressed in a shorter form, as 3.14. However, it goes on with an infinite number of digits. Here is pi with 12 decimal places:

3.14159265359

2. Pi day is officially on March 14th, because March is the 3rd month of the year and it is the 14th day, representing the first 3, and most famous, digits of pi: 3.14.

3. Pi never ever ends. It is an infinite number of digits and decimal places, and since it's not just one digit repeating or anything, it can't be written in its exact form as a fraction or decimal. Therefore, it's irrational.

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.