The number 20,2Δ8 is a 5-digit number with the tens digit covered by a triangle. Given that the number is divisible by 7, what is its tens digit? I GIVE BRAINLIEST!

20258. The missing digit is a 5

Step-by-step explanation:

Ok, let's write the number in a more creative way.  That's ,  minus something else. That something else has to be a multiple of 7, be less than 100, and has to end with a 2. Now start writing down the multiplication table for 7 and find how many of them ends with 2. 42 comes to mind, and that's the only one. (you can go up to 7x14=98 before having one digit too many).

That brings your number to be written as

In theory there was a criteria to see if a number was divisible by 7, but I've never learned it.

answer: 0+0=0

step-by-step explanation:

that is the only answer that can make 0

a negative exponent is translated as follows:

so, we have