Question

insert a rational number and irrational number between -2/5 and 1/2

Answer 1

Given numbers,
-2/5 and 1/2

A rational number between a and b is (a+b)/2

Rational number between -2/5 and 1/2 is
= [-2/5 + 1/2]/2
= [(-4+5)/10]/2
= (1/10)/2
= 1/20

An irrational number between a and b is √ab

-2/5 = -0.4 and 1/2 = 0.5
irrational number between them = 0.41234....

Answer 2

Hi,

Please see the attached file!


Thanks