chupis88 chupis88
  • 03-04-2019
  • Mathematics
contestada

What is the nth term of the arithmetic sequence 7,5,3,1?

Respuesta :

jcherry99
jcherry99 jcherry99
  • 04-04-2019

Answer:

tn = 7 + (n - 1)*(-2) or

tn = 9 - 2n

Step-by-step explanation:

You are (beginning with 7) subtracting 2 from the term to the left.

a = 7

d = -2

tn = a1 + (n - 1)*d

tn = 7 + (n - 1)*(-2)

Try this out on n = 4

t4 = 7 + (4 - 1)*-2

t4 = 7 +  (3) (-2)

t4 = 7 - 6

t4 = 1 just as it says.

More generally

tn = 7 + (n - 1)*-2

tn = 7 + (-2n) + 2

tn = 9 - 2n

Answer Link

Otras preguntas

Ricky wants to start a farm and grow wheat. Where would be the best place for him to relocate?
6 sq 2 evaluated need this answer fast
How many grams of sodium chloride are present in a 0.75 M solution with a volume of 500.0 milliliters?
cheddar cheese costs 7.50 for 1 kg Marie buys 200 grams of cheddar cheese how much does she pay
hector serves ice cream at a local ice cream shop.he sell 19 ice cream cones on satuday,2 ice cream cones on sunday,and 153 ice cream cones for the entire week.
What does the suffix -logy mean in the word astrology mean ?
which of following is the term used to describe a bodys resistance to a change in motion
ma ajuta si pe mine cineva va rog? a-5+6=12
Which of the following processes is a type of wind erosion a. plucking b. abrasion c. inflation d. chemical weathering
How do you stay organized