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Cookie_2046
 one year ago
What is the union of the two sets A={1,5,8,12,17} and B= {5,17}?
A. {1,5,17}
B. {1,5,8,12,17}
C. {5,14}
D. {17}
Cookie_2046
 one year ago
What is the union of the two sets A={1,5,8,12,17} and B= {5,17}? A. {1,5,17} B. {1,5,8,12,17} C. {5,14} D. {17}

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you know what union means?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2The union of two sets is a set that contains every element that is in one set or in the other set. Write each element only once. Now look at your sets. Create a new set, and start filling it with every element you see in set A or in set B. Do not write an element more than once.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2dw:1440194889262:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2The union has all elements from BOTH sets. You did the intersection. The intersection has the elements that are in common. The union has all of them.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2The figure above shows how you start writing the union of the sets. Start by creating a new set and copying all elements from one of the sets. The union already has all elements of set A.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Now look at the elements of set B. If they are different, write them in the union also. If they are already int he union, don't write them again.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2dw:1440195123845:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2The two elements of set B are already in the new union set we started writing, so the union set is done. We can close the bracket and we have finished.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2dw:1440195191470:dw

Cookie_2046
 one year ago
Best ResponseYou've already chosen the best response.0so is b the answer?

Cookie_2046
 one year ago
Best ResponseYou've already chosen the best response.0Oh Okay thanks for the big help

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Since both elements of set B are also elements of set A, set B does not add any new elements to the union of the sets.
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