Answer:
Step-by-step explanation:
I think the question is card(A)=20,card(B)=15,card(A∩B)=10, then what iscard(A∪B)
You can solve this question by drawing a picture like this to visualize the problem.
Thus the answer is card(A∪B)=card(A)+card(B)−card(A∩B)=25
Answer:
133,7697
Step-by-step explanation:

Answer:
15 tables
Step-by-step explanation:
Chairs = $200
Tables = $600
Maximum items = 39
Minimum sales = $13,000
If 20 chairs are sold, revenue is $4,000. At least $9,000 in additional revenue is required. To earn $9,000, a minimum of 15 tables would need to be sold, which is fine since a maximum of 19 tables is permitted to be sold.
The answer is 30. 360/12.
yes.
this is division. 36 divided by 12 is 3. 63 divided by 21 is 3.