Determine whether each sum, difference, product,
or quotient represents a rational number or an
irrational number. explain how you know without
simplifying

28. The difference represents an irrational number

29. The difference represents a rational number

30. The quotient represents a rational number

31. The quotient represents an irrational number

Step-by-step explanation:

* Lets explain how to solve the problem

- The rational number is any numbers can be put in the form of a/b,

  where a and b are integers b ≠ 0

- Ex: 1 , 2/3 , 5/4 , 22/7 , 100 , ................

- The irrational number is any number that is not rational

- It is a number that cannot be written as a ratio of two integers

 or cannot be expressed as a fraction

- Ex: √2 , √7 , π ,  ..... (π is irrational because it's approximated value)

- If the part of the the number is irrational, then the number

 is irrational

- Ex: (5 + √3) , (√7 + 5) , 2√5 , √11/4 , 5/√13

* Lets solve the problems

28.

∵ √2/2 is an irrational number

∵ One term is an irrational number

∴ The difference represents an irrational number

29.

∵ The two terms are rational numbers

∴ The difference represents a rational number

30. ÷

∵ The two terms are rational numbers

∴ The quotient represents a rational number

31. ÷

∵ √2/2 is an irrational number

∵ One term is an irrational number

∴ The quotient represents an irrational number

1) c 2143.6 cm

2) c 113.0 m

3) a 33.5 ft

4)   d 2 cm

5) c 20 mm

6) 180 in

7) d 120 ft

42.4

step-by-step explanation:

convert to decimal