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sdas [7]
3 years ago
9

If S = {x,y,4,9,?) , which could describe U ?

Mathematics
2 answers:
Mariana [72]3 years ago
6 0

Answer:

keys on a keyboard

Step-by-step explanation:

Blizzard [7]3 years ago
5 0

Answer:- A) U= { keys on a keyboard}


Explanation:-

  • A set is a well defined collection of objects.
  • A Universal set is the set containing all objects and all other sets are subsets of the universal set. It is denoted by 'U'.

Given set : S = {x,y,4,9,?}

Clearly it contains numbers (4,9), alphabets(x,y) and punctuation mark(?).

Thus the universal set of the given set must contain all of them.

Thus U={keys on a keyboard}



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Answer:

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Step-by-step explanation:

Here is the complete question

A car and a motorcycle leave at noon from the same location, heading in the same direction. The average speed of the car is 30 mph slower than twice the speed of the motorcycle. In two hours, the car is 20 miles ahead of the motorcycle. Find the speed of both the car and the motorcycle, in miles per hour.

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This question would be solved using simultaneous equation

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Answer:

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Step-by-step explanation:

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