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Paha777 [63]
3 years ago
11

Find the common ratio for the following geometric sequence. 0.75,1.5,3,6,...

Mathematics
1 answer:
Rasek [7]3 years ago
4 0

Answer:

<h2>2</h2>

Step-by-step explanation:

\text{If}\ a_1,\ a_2,\ a_3,\ a_4,\ ...\ ,\ a_n\ \text{is a geometric series, then}\\\\\dfrac{a_2}{a_1}=\dfrac{a_3}{a_2}=\dfrac{a_4}{a_3}=...=\dfrac{a_n}{a_{n-1}}=r=constant

\text{We have}\ 0.75,\ 1.5,\ 3,\ 6,\ ...\\\\\text{The common ratio}\ r:\\\\\dfrac{1.5}{0.75}=2\\\\\dfrac{3}{1.5}=2\\\\\dfrac{6}{3}=2\\\\\boxed{r=2}

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10 less than 3 times a number is 25 what is that number
vodomira [7]

Answer:

-5

Step-by-step explanation:

10 - 3N = 25

Subtract 10 from both sides

-3N=15

Divide both sides by -3

N = -5

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Step-by-step explanation:

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Which expression is equivalent to 2.2 + 0.5(3n-4) - 0.2(n+6)?
Mandarinka [93]

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4 years ago
If f(x) = х2 – 2x and g(x) = 6х +4, for which vаluе оf x does (f + g)(x) = 0?
zhannawk [14.2K]

Answer:

x = - 2

Step-by-step explanation:

(f + g)(x) = f(x) + g(x)

f(x) + g(x) = x² - 2x + 6x + 4 = x² + 4x + 4

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5 0
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Read 2 more answers
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