Aclub of twenty students wants to pick a three person subcommittee. how many ways can this be done?

Step-by-step explanation:

Combinations : If we want to choose items out of items, and order of the selection does not matter.

possible ways

Total number of students

Persons in subcommittee

Here order of selection does not matter, so we can use combination to get possible number of ways.

Number of ways

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.  

no ,sorry if you needed it but you can ask and try to see if any one will anwser ,

step-by-step explanation:

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