In first question x=8, I’m too lazy to solve the rest
Answer: 60 different numbers can be formed
Step-by-step explanation:
Note that we have 5 different digits, and we must select 3 of them. They should not be repeated
The order of selection is important in this case, because the number 532 is not the same as the number 235.
So we have a permutations problem, where we have a set of n elements and we want to choose r from them.
Then we define the permutacion as:
In this case note that n=5 because there are 5 elements in the set.
r = 3 because we combine the elements to form three-digit numbers
Then:
15 packages of you meant to say 2 1/2
Answer:
x=2
y=4
3 times 4 equals 12 and 2 plus 4 would equal six
The following statements are always true:
- X + Y is a whole number:
- X • Y is a whole number:
While the following statements are sometimes true
- X - Y is a whole number:
- W + Z is a whole number:
- Y + Z is a rational number:
- Y • W is a rational number:
- X % Z is a rational number:
<h3>How to determine whether the following statements are always, sometimes, or never true?</h3>
The given parameters are:
- Whole numbers = x and y
- Rational numbers = w and z
The sum and products of whole numbers are always whole numbers.
This means that, the following statements are always true:
X + Y is a whole number:
X • Y is a whole number:
While the following statements are sometimes true
X - Y is a whole number:
W + Z is a whole number:
Y + Z is a rational number:
Y • W is a rational number:
X % Z is a rational number:
Read more about rational numbers at:
brainly.com/question/27849436
#SPJ1