Question

Which of the following is a pair of reciprocals?

A. (3, -3)
B.( 3 1/3, 3/10
C. (2^3, 3^2)
D.(0, 1)

Answer 1

B

Explanation:

Given a number n then its reciprocal is
`(1)/(n)`

A 3 and - 3 are opposites not reciprocals

B

3
`(1)/(3)` =
`(10)/(3)` and
`(1)/((10)/(3) )` =
`(3)/(10)`

Then

( 3
`(1)/(3)` ,
`(3)/(10)` ) ← are reciprocals

Answer 2

B, 3 1/3, 3/10

Explanation:

two numbers are reciprocals if when you multiply them, the product is 1. when multiplying 3 1/3 by 3/10 the answer is 1, so you know this is the pair of reciprocals

hope this helps :)