Which number produced an irrational number when added to 0.4 a. 2/7 b. 3 (3.14) c. 0.444 d. 9 squared

hi!

2/7 = 0.285714286

0.285714286 + 0.4 = 0.685714286

this is rational because it can be written as a fraction. 685714286/1000000000

3π = 9.42

9.42 + 0.4 = 9.82

this is rational. (9 82/100)

√9 = 3

3 + 0.4 = 3.4

this is rational (3 2/5)

0. + 0.4 = 4.

this is irrational because you can't convert an infinitely repeating decimal to a fraction.

hope this ! : )

-peredhel

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.