sjjshebsns sjjshebsns
  • 21-07-2020
  • Mathematics
contestada

the nth term of a sequence is n^2 -n-2 .find the sum of the first and third terms

Relax

Respuesta :

sowjanyagudimetla6
sowjanyagudimetla6 sowjanyagudimetla6
  • 24-07-2020

Answer:

2

Step-by-step explanation:

substitute n=1 and n=3 in the given equation

1 st term is (1)^2-1-2 = 1 -1 -2 = -2

3rd term is (3)^2-3-2 = 9-3-2=4

sum of 1st and 3rd term is -2 + 4 = 2

Answer Link

Otras preguntas

In what organizational pattern do you compare and contrast subjects as a whole?
What were some of the main features of Egyptian art
What percent of 45 is 52.2? Answer and explain plzz
what is 12/42 when you simplify it
How did roman architecture affect western Civilization?
What is the area of a rectangle with measurement of 17 ft 8 in by 11ft 8in
what is the largest agency of the executive office of the president?
A number increased by 4 is the same as 19 minus 2 times the number.
Tim had $149 to spend on 8 books. After buying them, he had $13. Write and solve an equation to find your answer
By building military bases around the world, imperialist nations mainly aimed to A: resupply naval vessels. B: initiate wars in several places at once.