This is the example my teacher used. however, i still don't understand what makes the integers even or odd. i was hoping someone here could me understand the difference.

The odd numbers from one to 10 are: 1, 3, 5, 7, 9.

The even numbers from one to 10 are: 2, 4, 6, 8, 10.

[odd, even, odd, even, odd...] [1, 2, 3, 4, 5]

Here's an example:

See how x is an odd number and the sum of the number and two makes another odd number?

The same can go with an even number:

See how x is an even number and the sum of the number and six makes another even number?

I hope my answer helps you understand even and odd numbers.

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

30 feet

step-by-step explanation:

that would be 2 1/2 * 12

= 24 + 6

= 30 feet   (answer)