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The terms shown below are the first three terms of a geometric sequence whose common ratio is positive.
7, 4x+8, 112.

a) Determine the value of the common ratio
b) Determine the value of X algebraically.

Respuesta :

ferrybukantoro

Answer:

a. 4

b. 5

Step-by-step explanation:

a. r = √(112/7) =√16 =4

b. 4x+8 = 28

4x = 28-8

4x = 20

x= 5

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