watercubes2910 watercubes2910

13-04-2021
Mathematics

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What is the 12th term of the geometric sequence if a1= 30 and r=4.

Respuesta :

unicorn3125 unicorn3125

14-04-2021

Answer:

a₁₂ = 30·4¹¹ = 15·2²³

Step-by-step explanation:

[tex]a_n=a_1\cdot r^{n-1}\\\\a_{12}=30\cdot 4^{12-1}\\\\a_{12}=30\cdot 4^{11}=15\cdot2\cdot2^{22}=15\cdot2^{23}[/tex]

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