630/105=6 minutes per dish
630/70=9 minutes per dish
15 minutes:2 dishes
630/15=42
It will take them 42 minutes to rinse 630 dishes together.
Im not sure for B but A makes a square. If you have graph paper you can plot them and it should make a normal square. Hope that helps.
Answer:
False.
Step-by-step explanation:
1. 0.2 is 1 percent of 20.
2. 0.2x20 is 4
3. 14 divided by 0.2 is 70, that means 14 is 70% of 20.
4. Therefore, 4 is 20% of twenty.
Answer:
A ∩ B = {1, 3, 5}
A - B = {2, 4}
Step-by-step explanation:
The given problem regards sets and set notation, a set can simply be defined as a collection of values. One is given the following information:
A = {1, 2, 3, 4, 5}
B = {1, 3, 5, 6, 9}
One is asked to find the following:
A ∩ B,
A - B
1. Solving problem 1
A ∩ B,
The symbol (∩) in set notation refers to the intersection between the two sets. It essentially asks one to find all of the terms that two sets have in common. The given sets (A) and (B) have the values ({1, 3, 5}) in common thus, the following statement can be made,
A ∩ B = {1, 3, 5}
2. Solving problem 2
A - B
Subtracting two sets is essentially taking one set, and removing the values that are shared in common with the other set. Sets (A) and (B) have the following values in common ({1, 3, 5}). Thus, when doing (A - B), one will omit the values ({1, 3, 5}) from set (A).
A - B = {2, 4}
