joladele09pdgz55 joladele09pdgz55

14-08-2018
Mathematics

contestada

the first and third term of a gp are 5 and 80 what is the fourth term

Respuesta :

14-08-2018

Let r be the common ratio, then the first four terms are

[tex]5, 5r, 5r^2, 5r^3[/tex]

[tex]5r^2 = 80[/tex]

[tex]r^2 = 16[/tex]

[tex]r = 4[/tex]

Fourth term [tex]5r^3 = 320[/tex]

Answer: 320

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zaria68 zaria68

15-08-2018

Mm do u have the answer yet?

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