anno2000 anno2000
  • 23-06-2016
  • Mathematics
contestada

The sum of the squares of three consecutive integers is 194. What are the integers ?

Respuesta :

londonlove2002
londonlove2002 londonlove2002
  • 27-06-2016
1st consecutive integer : x
2nd : x+1
3rd : x+2 

(x)^2 + (x+1)^2 + (x+2)^2 = 194
x^2 + x^2 + 2x + 1 + x^2 + 4x + 4 = 194
3x^2 + 6x + 5 = 194
3x^2 + 6x - 189 = 0
3(x^2 + 2x - 63) = 0
(x+9)(x-7) = 0
x = -9 or x = 7 


when x=-9 
-9^2 + (-9+1)^2 + (-9+2)^2 
= 81 + 64 + 49
=162 (reject) 

when x=7
7^2 + (7+1)^2 + (7+2)^2 
= 49 + 64 +81
= 194 

so the three consecutive integers are 7,8,9 .
There hope this helps
Answer Link

Otras preguntas

Heart = H star = S crescent = M triangle = T
on your own words, write short note on 3 Types of organizational market​
You start at (6, 1). You move right 4 units. Where do you end? I’ll give brainlies
You are helping to design a new fire escape for your third-floor apartment. You step out the window onto a crossbar that is attached to a rope, which in turn is
One roofer can put a new roof on a house three times faster than another. Working together they can roof a house in 5 days. How many days would it take the fast
20 Select the correct answer Which social behavior occurs when barring a person from joining a club because of his ethnicity? A racism B. stereotyping C. bias D
David Barnes and his fiancée Valerie Shah are visiting Hawaii. At the Hawaiian Cultural Center in Honolulu, they are told that group of 18 people will be random
Helps plsss I need help thx
How does montresor lure fortunato into the catacombs.
Help me with the ones you are able to do. Please:((