What is the common ratio of the geometic sequence whose second and forth terms are 6 and 54, respectively?

Mathematics

2 answers:

devlian [24]2 years ago

8 0

The answer would be C.

Luda [366]2 years ago

7 0

Answer:

Step-by-step explanation:

The n th term formula of a geometric sequence is

$a_{n}$ = a $r^{n-1}$

where a is the first term and r the common ratio

Using the second and fourth term, then

ar = 6 → (1)

ar³ = 54 → (2)

Divide (2) by (1)

$\frac{ar^3}{ar}$ = $\frac{54}{6}$ = 9

r² = 9 ⇒ r = $\sqrt{9}$ = 3 → C

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Alina [70]

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8 0

2 years ago

Please help fast!!!!!!!

garri49 [273]

Answer:

l am sorry l do not get the question

8 0

2 years ago

I need help on #11& #8

Musya8 [376]

100 * pi = pi * r^2
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So... 100= r^2
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5 0