samiromero2005 samiromero2005
  • 02-05-2022
  • Mathematics
contestada

Write a rule for the nth term of the sequence. Then find a20. Assume the first termis a₁. 86, 79, 72, 65…

Respuesta :

khuonglu1999 khuonglu1999
  • 02-05-2022

Answer:

an = a(n-1) - 7

Step-by-step explanation:

the second term is smaller than the first term 7.

a20 = a19 - 7

a19 = a18 - 7

=> a20 = (a18 - 7) - 7

Then you can accumalate until a1

-> a20 = a1 - 19*7 = 86 - 19*7 = -47

Answer Link

Otras preguntas

If my aunt means degree Celsius or degrees Fahrenheit
Zeolite organized a canned food drive. She worked a total of 12 2/3 hours. She worked 3 1/6 hours each day that she worked. How many days did Zellie work on th
For the function f(x) = x2 ­ -12, find (f o f­-1)(4)
what is the mass (in kg) of 6.89 × 1025 molecules of co2? the molar mass of co2 is 44.01 g/mol.
your body is in transduction only after you see the object you're looking at. true false
number 37.....…………………………………
literary style is not about what is said but how it is said. true or false.
Why did Parliament pass the Sugar act?
You use 4 gallons of water on 14 plants in your garden. At this rate, how much water will it take to water 35 plants?
8+(-6)=help,,, i got 2 but dont know if it's right