rhuether rhuether
  • 22-07-2016
  • Mathematics
contestada

write a rule for the nth term of the arithmetic sequence with a7=1 and a2=26

Respuesta :

dalendrk
dalendrk dalendrk
  • 25-07-2016
[tex]a_7=1;\ a_2=26\\\\a_n=a_1+(n-1)d\\\\a_7-a_2=5d\to5d=1-26\to5d=-25\to \boxed{d=-5}\\\\a_1=a_2-d\to a_1=26-(-5)=26+5=\boxed{31}\\\\\boxed{a_n=31+(n-1)\cdot(-5)=31-5n+5=\boxed{36-5n}}[/tex]
Answer Link

Otras preguntas

Suppose your friend multiplied 1.2 and 2.6, then got 31.2 as the product. Is your friend’s answer reasonable? Justify your response.
please help! multiple choice! will give brainly
Given a test that is normally distributed with a mean of 100 and a standard deviation of 12, find: (a) the probability that a single score drawn at random will
Which is NOT true of vent bacteria, they are A. primary producers B. chemosynthetic C. photosynthetic D. resistant to extreme conditions
Please help me I will give you the brain thing and extra points. image below part 4
What is the value of x? Round to the nearest tenth(1 decimal place)​
The figures are similar. Find the missing length.
The odds against an event are 19 to 12 find the probability that The event will occur
Expand: fx=x^4-blankx^3+blank x^2 + blank x- blank
Please answer all the questions above