anonymous
  • anonymous
here are 18 students in Mr.Alvarez'S art class. Throughout the year every student must pair up with every other student to complete a project. How many projects will be finished? 149 153 171 125
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
9? If every student has a partner, then you would divide the total amount of students by 2.
anonymous
  • anonymous
Well one of th answers has to be 149, 153, 171, 125
hartnn
  • hartnn
ok, lets assume there are only 3 students, then total no. of projects = 2+1 = 3 for 4 students, total number of projects = 3+2+1.= 6 similarly for 18 students it will be 17+16+15+.....+2+1 = ??

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anonymous
  • anonymous
51
hartnn
  • hartnn
how? no.
anonymous
  • anonymous
Oh
hartnn
  • hartnn
its 17+16+15+14+13+12+11+10+9+8+7+6+5+4+3+2+1=? or u can do 17*(17+1)/2
anonymous
  • anonymous
Oh ok I see now thanks
hartnn
  • hartnn
welcome ^_^

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