A sandbox is 2.5 m wide and 3.4 m long . approximately how much sand will it take to fill it 0.3 m deep?
1 answer:
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Answer:
A∩B={}
B is a proper subset of A:
B⊂A
Step-by-step explanation:
A∩B means the intersection of the set A and the set B. In other words, is the set of elements contained in these both sets.
Given the set A and the set B:
{
}
{
}
You can indentify that the numbers common in both sets are: 25,45 and 65.
Therefore you get:
A∩B={}
Since all elements of B are in A, and A contains elements that are not in B, then B is a proper subset of A:
B⊂A
