Register
DECIDE !!!!!!!!!!!!!
182k views
1 vote
DECIDE !!!!!!!!!!!!!

DECIDE !!!!!!!!!!!!!-example-1
User Jim Wood
by
3.1k points

1 Answer

4 votes

Answer:

  • 55

Explanation:

Use the identity for the sum of squares of n natural numbers:

  • Sₙ² = n(n + 1)(2n + 1)/6

Since we have the sum, 56980:

  • n(n + 1)(2n + 1)/6 = 56980
  • (n² + n)(2n + 1) = 56980*6
  • 2n³ + 3n² + n - 341880 = 0

Solve the equation graphically to get a natural solution of n = 55

DECIDE !!!!!!!!!!!!!-example-1
User Artiom Kozyrev
by
3.5k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

3.4m questions

4.4m answers

Other Questions

Can someone help me plz I have to Turn 27/9 in simplest
The sanchez family goes out for dinner, and the price of the meals is $60. The sales tax on the Meals is 7 percent, and they also want to leave a 15 percent tip. What is the total cost of the meal? Analyze
Simplify: 10 ÷ [(5 + 2) − 5]
A survey of 539 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night. It found: 189 watched TV 163 hung out with friends 29 watched TV and ate pizza, but did
WHAT IS 33 TIMES 5 TELL ME THE ANWER
Link Copied!