Question

Which expressions below equal a rational number? Choose all that apply.

136
715 - 245
(47)(217)
V100 + 5

Answer 1

Answer: A & D

Explanation:

Answer 2

All are rational numbers.

Explanation:

A rational number can be written in the form:

`(a)/(b)`

where a and b are integers and b≠0.

We can rewrite 136 as

`(136)/(1)`

hence 136 is a rational number.

715-245=470....is an integer and hence a rational number.

(47)(217)=10199....which is an integer, and all integers are rational numbers.

`√(100) + 5 = 10 + 5 = 15`

15 is also an integer and hence an integer.