Question

For which of these values of y will 2y be an irrational number?
a) y =√49
b) y = -2/13
c) y = 22/7
d) y=√8

Answer 1

Answer:

d) y=√8

I hope this helps you.

Answer 2

Answer:d)root8

Step-by-step explanation:

lets take a=root49

2y = 2 x root49

2 x 7 = 14 , rational number

lets take b=-2/13

2y = 2 x -2/13

-4/13 , rational number

lets take c=22/7

2y = 2 x 22/7

44/7 , rational number

lets take d=root8

2y = 2 x root8

2 x root4 x root2 = 2 x 2 x root2

4root2 , irrational number

hope it helps

thank you :)