Mathematics: Find the third term of the geometric sequence when a1=1/4 and r=−2 a. -4 b. 12 c. 1 d. −12

Find the third term of the geometric sequence

ldmcloon

14.03.2022

1 is the third term.

Step-by-step explanation:

Geometric sequences have a common ratio. This means a term divided by previous term is the same no matter the choosing of term.

So for example:

$\frac{a_{n}}{a_{n-1}}=\frac{a_{n-1}}{a_{n-2}}=\cdots=\frac{a_4}{a_3}=\frac{a_3}{a_2}=\frac{a_2}{a_1}$

So anyways geometric sequences means you are just multiply the common ratio over and over to generate the next term.

So, the first term is 1/4.

The second term is (-2)(1/4)=-1/2.

The third term is (-2)(-1/2)=1.

0,0(0 оценок)

gimpypeach

10.01.2020

16*(125 + 4)*d + 27*(65+5) *d

Step-by-step explanation:

0,0(0 оценок)