shanaz shanaz
  • 16-01-2017
  • Mathematics
contestada

Find the nth term of this quadratic sequence:
4, 7, 12, 19, 28

Respuesta :

larrythelamb
larrythelamb larrythelamb
  • 27-04-2020

Answer:

n^2+3

Step-by-step explanation:

Step 1:

Work out the first differences and that is 3, 5, 7, 9.

Step 2:

Find the second difference and that is 2.

Step 3:

Since half of 2 is 1, then the first term is n^2.

Step 4:

Subtracting n^2 from the sequence gives 3.

So the answer is n^2 + 3.

Answer Link

Otras preguntas

Provide the genotype for the long nose phenotype
The enlightenment and Neoclassicism essay
Primary Sources: Martin Luther King's "Letter from Birmingham Jail" Write a short response to summarize the disagreement between any two people or organizations
need help with math problem if do 5 stars
Please I’m begging at this point please help I’m about to cry
Do you think that the continents will ever rejoin to form another supercontinent like Pangaea? yes or no?
Given that angle a = 54° and angle b = 48°, work out x. a b x The diagram is not drawn accurately. = PLEASE HELP ASAP!! 20 POINTS!!
The Atlas V Rocket could go 1 full mile in just 1 10 of a second. How fast did it travel?
Help math math math math
Which of the following expressions represents the total earnings of a commissioned employee earning 9. 5% commission with sales of $8,540? a. (0. 0095)(8,540) b