subject
Mathematics, 30.01.2021 18:40 jujurocks10

The sum of the first n natural numbers is 1/2n(n + 1). If the sum is
78, find the value of n.

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 21:00
The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years
Answers: 1
question
Mathematics, 21.06.2019 22:30
Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2
Answers: 1
question
Mathematics, 21.06.2019 23:40
Let x = a + bi and y = c + di and z = f + gi. which statements are true?
Answers: 1
question
Mathematics, 22.06.2019 00:00
One positive integer is 2 less than another. the product of the two integers is 24. what are the integers?
Answers: 1
You know the right answer?
The sum of the first n natural numbers is 1/2n(n + 1). If the sum is
78, find the value of n....
Questions
question
Mathematics, 24.10.2020 23:00
question
Mathematics, 24.10.2020 23:00
question
Mathematics, 24.10.2020 23:00
question
History, 24.10.2020 23:00
question
Mathematics, 24.10.2020 23:00
question
English, 24.10.2020 23:00
question
Chemistry, 24.10.2020 23:00
Questions on the website: 13722367