JaytonS354268 JaytonS354268

25-10-2022
Mathematics

contestada

If ten people shake hands with each other exactly once, how many handshakes take place?

Respuesta :

WilfredoA751010 WilfredoA751010

25-10-2022

Apply the formula:

n(n+1)/2

Where n is the number of shake hands of the first person (9)

9 (9+1) /2

9 (10)/2

90/2

45 shakes

Answer Link

Otras preguntas

what is the solution of sqrt x+12=x

Which sequence is modeled by the graph below? points are (1,3) (2,0.6) (3, 0.12) A an = 3 (one fifth )^n − 1 B an = 3(−5)^n − 1 C an = 0.3(5)^n − 1 D an = o

Which of the following represents a recursive sequence? A. a(n)=3(n)-2 B. a(n)=3x3^(n-1) C. a(n)=3xa(n-1) D. a(n)=3

How many soulutions doses the system formed by x-y=3 and ax+3a=0 have for a nonzero number a

how is respiration of yeast important for the baking process?

Which of these was the main reason Andrew Jackson was not convicted after he was impeach

please help me with this problem!

Identify which sentence below is punctuated correctly

Which group would have been part of the Third Estate in the period immediately before the French Revolution? Kings Lawyers Nobles Priests

Parents and their children often deepen their relationship through participation in sports. what example of sociological perspective is this?