keishlav5183
16.12.2020 •
English
1
What does Aunt Anna have to do before Yoli can find the
Big Dipper and the Little Dipper?
A show Yoli which star is the North Star
® tell Yoli that the North Star always points north
C tell Yoli why she knows so much about stars
D show Yoli drawings of the sky on her phone
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Ответ:
1) A∪B={1,2,3,4,5,8,9,11,12,14,15,17,18,19}
2) A∩B = { 2,3,8,9,12,18,19}
Step-by-step explanation:
Since we have given that
A={1,2,4,5,8,9,11,12,14,15,17,18,19}
B={2,3,8,9,12,18,19}
So, we need to find the union of above sets and intersection of above sets.
Since union is the collection of all elements either in A or in B.
So, it becomes,
A∪B={1,2,3,4,5,8,9,11,12,14,15,17,18,19}
And intersection is the common element both in A and B.
A∩B = { 2,3,8,9,12,18,19}