Question

1)
Select the BEST classification for π.
A)
irrational
B)
rational
C)
imaginary
D)
complex

Answer 1

First, find the definitions of those terms.
Then read them and understand them.
Finally, pick the correct answer.
If you still need help, then ask.

Answer 2

Hmm I'm trying to think of how to give you a hint without just giving away the answer >.<

Well here are some examples of numbers:
Rational can be written as a ratio of whole numbers:\[\large\rm \frac{2}{3},\qquad\qquad \frac{7}{11},\qquad\qquad \frac{15}{22}\]

Irrational numbers have no fractional representation in the whole numbers:\[\large\rm 4\pi,\qquad\qquad \sqrt{3},\qquad\qquad \sqrt{7}\]

Imaginary is a number undefined in the real numbers:\[\large\rm \sqrt{-1},\qquad\qquad \sqrt{-4},\qquad\qquad \sqrt{-12}\]

Complex numbers have both a real and imaginary part:\[\large\rm \pi+\sqrt{-2},\qquad\qquad 7-\sqrt{-5},\qquad\qquad 11+\sqrt{-11}\]

Answer 3

So I gave some examples of each type of number.
Any ideas which group pi would belong to? :)

Answer 4

imaginary

Answer 5

Hmm

Answer 6

i have another problem i cant answer Seats in an auditorium are numbered 1-500, and the principal is handing out snacks in an assembly. Every student whose seat is a multiple of 4 gets chocolate. Every student in a seat that is a multiple of 7 gets jelly beans, and every student in a seat that is a multiple of 10 gets chips.

The student in which seat number is the first to get all 3 treats?
A) 40
B) 70
C) 100
D) 140

Answer 7

Here are some important definitions:

Natural numbers: the counting numbers: 1, 2, 3, 4, ...

Whole numbers: the counting numbers and 0: 0, 1, 2, 3, 4, ...

Integers: the whole numbers and the negatives of the whole numbers:
... , -3, -2, -1, 0, 1, 2, 3, ...

Rational numbers: any number that can be written as a fraction of integers.
Rational numbers either terminate: 2, 2,.55, 4.301,
or they don't terminate, but they repeat: 3.555..., 4.636363...

Irrational numbers: numbers that cannot be written as a fraction of integers.
Irrational numbers do not terminate and do not repeat.

All numbers described up to here form the set of real numbers.

Imaginary: a number that has as a factor the square root of -1, denoted as i.

Complex number: a number that is a sum of a real part and an imaginary part.