vladisking888
vladisking888 vladisking888
  • 15-12-2018
  • Mathematics
contestada

Write an explicit formula fo the sequence 7,2,-3,-8,-13.... Then find the 14th term
(please explain)

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 15-12-2018

Answer:

The 14th term is -58

Step-by-step explanation:

The formula for an arithmetic sequence is

an = a1+d(n-1)

where a1 is the first term

d is the common difference and

n is the term number

a1 = 7

d = 2-7 = -5

Check -3-2 = -5   so d = -5

an = 7 -5(n-1)

We want the 14th term

a14 = 7 -5(14-1)

a14 = 7 -5(13)

a14 = 7 -65

a14 = -58

Answer Link

Otras preguntas

Alex usually runs for 21 hours a week, training for a marathon. If he is unable to run for 3 days, describe how to find out how many hours of training time he l
Simultaneous equation Find x and y 2x+y=5 X+3y=5
V-9/10v+6=11(hlp)this problem is confusing.
Was the American Revolution inevitable? list 3 examples. i need details, please.
1-which of the following was an important reason that the Framers favored a bicameral legislature? (a) both Parliament and the colonial legislature were bicamer
Translate the statement into an equation:the difference of four times a number and eight is equal to twenty-three less than that number
how did the scientific revolution lead to the enlightenment?
how are photosynthesis and cellular respiration opposite in terms of carbon dioxide
how do we make a graph?
how did the scientific revolution lead to the enlightenment?