I got a new ipad mini and somehow it has a passcode that i didnt make. now i cant get into my ipad mini and i need help figuring out how to unlock it.

If you have forgotten the screen passcode, you'll need a computer to restore your iPad as long as you have synchronized your device with the computer. You can reset your passcode and resynchronize the data from the device or restore it from an iCloud backup.

If you are using another computer that you never synchronized the iPad with, you will only be able to unlock the device and you will lose the data on the iPad.

Here's also a guide for your reference.
https://www.imyfone.com/unlock-iphone/what-to-do-if-i-forgot-ipad-mini-password/

Is there anything wrong with the passcode? If your iPad is locked and you forget the passcode, please follow the steps below to unlock it.

1.Connect your iPad to your PC or Mac.
2.Select your device in the iTunes sidebar, and click the"Summary" tab.
3.Click "Check for Update". iTunes will show you if there any new version of iPad software is available.
4.Click "Restore iPad". You can finish the restore process by following the instructions given. During the process, a recommend that tells you to back up your files will be given. You can restore your data after the process is complete.

Now, you must have restored your iPad.
Note: Even you bring your iPad to the Apple service center, Apple staff also need to restore your iPad to unlock it. That's to say, you need to erase everything on it.

http://www.leawo.org/tutorial/forgot-ipad-screen-lock-password-how-to-recover-data-from-locked-ipad.html

disabled how if icloud locked we or itunes cant help you --if battery or screen problem bring to a repair shop or sony store

The following can be done on ipad with iOS 8:
1. Press the home button( the round button on the front side of your ipad), to go to the home screen.
2. Find the Settings icon ( looks like gray clockwork gears) and tap on it to launch the Settings app.
3. After settings app is started try to find on the left side of the screen Passcode ( has a red lock icon near the text) and tap on it
4. In the passcode setting screen you can choose the type of passcode with the Simple passcode setting switched on or off ( simple means a 4 digit number, not simple means any character combination
5. By taping on Turn passcode on you can enter your passcode. Be carefull not to forget your passcode, otherwise you will not be able to use your ipad later.

There is no such thing as a free imei unlock code. If you need to unlock the sim in your iPad. (imei is connected to they Sim card) you can ask the provider to give you a new sim card with the same number. the new card has a new imei, new pin and new Puk.

The best way to figure it out is to hold the Ipad mini against the light and see if you can tell what his unlock pattern is. If his screen is clean you wont be able to tell.

After you put in the wrong pass code 3 times, you only can unlock the iPad with the correct password, belonging to the Apple ID from what is only a part shown on the screen. If you don't have the passcode nor the password Apple assumes you are not the legal owner, and you can't use the iPad anymore. Just go back to your friend, ask him to unlock the screen, to wipe the content and reset the iPad to factory settings.
For that goto settings, general and scroll to the bottom line and press that. then the second line wipe everything. Again the login code is asked. but after that the iPad is empty.Your friend should also remove the iPad from his list of registered Apple equipment.

It's usual for us to forget the passcode, however, there are several ways to reset the iPad password. Just follow one of them shown below.

If you've neither synced with iTunes nor set up Find My iPhone in iCloud, you'll need to wipe your iPad to factory setting to remove the password, which means you'll suffer losing all your data on iPad and get it as a new one.
Please pay attention there is a slight difference in putting different models of iPad into recovery mode.
iPad Air

• 1. Turn off your iPad Air, press and hold the Home button.
• 2. While holding the Home key, connect the USB cable to the device. Wait until the Apple logo appears and keep holding the Home button for few more seconds.
• 3. Continue holding the Home button until the iTunes logo appears.

iPad mini/iPad pro

• 1. Connect your iPad to your computer or laptop and open iTunes.
• 2. While your device is connected, force to restart it.
• 3. Press and hold the Sleep/Wake and Home buttons at the same time. Don't release when you see the Apple logo. Keep holding both buttons until you see the recovery mode screen.

Now you have entered the recovery mode, and

1. When you see the option to Restore and Update, click it.

2. Wait for the process to finish. Then you can set up and use your device.

For more methods, check: How to Unlock iPad?

I activated my voice over, and now its lock. I cant even put my passcode on it. please help..

Unfortunately, you're a bit stuck. The only way of removing a passcode without knowing it is to restore from an iPad backup when the passcode wasn't applied.
My advice would be to take it to an Apple Store, and explain the situation. They're always very helpful, and may be able to do something about it.
Hope that helped!