Write the rule for the nth term of the geometric sequence. then find a5
a2= 20 , r= 1/4

aₙ = a₁rⁿ⁻¹

a₅  = 5/16

Step-by-step explanation:

Formula:

nth  term of geometric sequence

aₙ = a₁rⁿ⁻¹

aₙ - nth term

a₁ - first term

r - common ratio

To find a₅

It is given that, a2= 20 , r= 1/4

we can find a₁

a₁ = a₂/r = 20/(1/4) = 20 * 4 = 80

aₙ = a₁rⁿ⁻¹

a₅ = a₁r⁽⁵⁻¹⁾ = 80 * (1/4)⁴ = 5/16

Therefore a₅  = 5/16

answer: 5

step-by-step explanation:

a.) list the factors of 40.

1/2/4/5/8/10/20/40

b.) list the factors of 40 that represent the number of cans that could be on each shelf.

5

c.) how many different arrangements of cans are possible?

just one because if you put more on one shelf you will go way over 40 and the cabinet will probably break.

d.) what are the possible arrangements of the cans?

put 5 cans on each self to reach 40 cans in total.

e.) which arrangement uses all the shelves?

5 because you can put 5 cans on each shelf, and since there are 8 shelfs you are equally going to get 40 cans.