raumqari
raumqari raumqari
  • 16-04-2020
  • Mathematics
contestada

5. (6 points) Find the sum of the series represented by:
∑3 − 5 6 =1

5 6 points Find the sum of the series represented by 3 5 6 1 class=

Respuesta :

wiitong0394703
wiitong0394703 wiitong0394703
  • 16-04-2020

Answer:

-9

Step-by-step explanation:

split the sequence to 3∑i - ∑5

the first is use formula

∑i = i*(i+1)/2

and ∑5 = 5i

subtract

6*7/2 - 5*6 = -9

Answer Link

Otras preguntas

Did Jesus live during the Roman Republic or the Roman Empire?
I need help with this question
12. Identify the conjunctive adverb in the following sentence: "The dark skies and distant thunder dissuaded Clarice from her afternoon run; moreover, she had t
how does school help to solve social problems?write​
how does self inductance of a coil depends on number of turns the coil​
Why did Japan go 200 years without contact or influence from the outside world? A. Japan wanted to protect its culture. B. Japan wanted to strengthen its influe
The sides of a triangle are in the ratio 2:3:4 and the longest side is 20 cms longer than the shortest side. Compute the length of each side.
solve properly step by step plz plz plz ​
Find x and y! X = ? Y = ?
James is x years old now and the sum of his age is and his brothers age is 10. 1) How old is James brother? 2) How old was James 3 years ago? 3) How old was Jam