Unit 5 - Classifying Numbers and Pyt. Thm.

Question 1

What is a rational number?

Answer 1

A number that can be expressed by a ratio

Question 2

What is an irrational number?

Answer 2

A number that cannot be expressed by a ratio

Question 3

What are the prime and composite numbers?

Answer 3

1 - neither
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97 - prime
All others - composite

Question 4

What are the parts of a radical?

Answer 4

The whole thing - radical
Symbol - radical symbol
number used (squaring, cubing) - index
number being squared, cubed - radicand
(If index is not written, it is a 2)

Question 5

What are the parts of a right triangle?

Answer 5

opposite - leg opposite of the theta
adjacent - leg adjacent (next to) theta
hypotenuse - longest line

Question 6

What does the Pythagorean Theorem state?

Answer 6

a^2 + b^2 = c^2

Question 7

What are the classifications of numbers?

Answer 7

Natural - 1...65...2346
Whole - 0...54...345
Integers - -53354....-535...0...4355
Rational - 1/2, 3/4. 7/8
Irrational - sqrt 38
Real - all of the above