If x is to be chosen at random from the set {1,2,3,4} and y is to be chosen at random from the set {5,6,7},what is the probability that xy will be even?

2/3

Step-by-step explanation:

To get the answer here, firstly we would need to know the total number of expected answer. This is equal to 12. This can be gotten by using a table whereby one of the parameters are on the horizontal side with the other on the vertical.

Now the even numbered products are : 6, 10,12,14,18,20,24 and 28

The total number of this is 8

The probability is thus 8/12 = 2/3

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

answer: $201

step-by-step explanation: to get the answer, you first get 3 nieces that he sold and multiply it by 67 and get $201, so he earned $201 selling his nieces.