Answer:
the answer is b
Step-by-step explanation:
So, the first number can be any of the 10 digits (0-9). From these 10 digits, 0,2,4,6, and 8 are even numbers. The total number of even numbers is 5. Therefore, 5 numbers are not even numbers.
So, the probability that a first character is an even number is equal to the number of even divided by the total number of possible outcomes. That is,

The probability is
0.50.
I’m not sure what the answer is so better I don’t say I don’t want you to get it wrong
The answer is b, 6
if x=8 then you need to plug in 8 for your in the equation, so you’d have 2(8) - y = 10
you’d get: 16 - y = 10
you’d then subtract 16 from both sides to get -y alone
so now you have -y = -6
you can’t have a -y so you’ll have to divide -1 from both sides
you’ll end up with y=6, which is your answer