If two sets are same let a and bthen we can say a= b
according to definition of intersection it is function that contains common enements from both setsas a=b so all elemnts are commonso a= a n bor b = a n b
in union the function has all elements of both sets and in set no element repeats so
a u b = aor a u b = b
as a u b = a or b and a n b = a or b so we can conclude here that
a u b = a n b as a = b // defined above
Answer:
The expression representing Noah’s new number is 
Step-by-step explanation:
Noah started with a number, x.
Four times the number x is 4x
The difference of four times the number and three is 4x - 3
The difference of four times the number and three cubed is 
Thus, the expression representing Noah’s new number is 
Answer:
It Depends
Step-by-step explanation:
If the image is the scale, the answer is 1/3, since its width of 3 is 1/3 the width of the actual book.
If the book is the scale, the answer is 3, since its width of 9 is 3 times the width of the image.
Answer:
The clown has 363 yellow balloons
Step-by-step explanation:
The clown has 165 red balloons.
Let us say the clown has x yellow balloons
The question tells us that this value is 198 balloons less than the yellow ones.
This means that if we add 198 to the number of red balloons we should get x - the number of yellow ones.
x = 165 +198 = 363 balloons
Therefore, the clown has 363 yellow balloons