I recently bought two guitar strings:

Ernie Ball Super Slinky Custome Gague Nickel Wound 9-42
D'Addario XL Nickel Wound Super Light Gague .009-.042

I already used Ernie Ball to swap my electric guitars strings, on the cover it said "Electric or Acoustic Guitar String"

I'm not sure if I can use the D'Addario on an acoustic, can I?

Thanks alot
IMHO you'd be better served just getting a pack of bronze/phosphor bronze acoustic strings, but yeah it won't hurt anything.
-Guitar Gear-
1995 American Fender Strat, EMG 85 pup
Randall RH200 Head
Marshall 1960a Cab
Woods Acoustic
-Bass Gear-
Spector Legend 4 bass
Washburn Bantam bass
Hartke HA2500
Fender Bassman 410H
Play what you love, love what you play