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3 years ago

The 6 term of a G.P is -2\27 and it's first term is 18.what is the common ratio

Mathematics

1 answer:

Airida [17]3 years ago

4 0

Answer:

r = - $\frac{1}{3}$

Step-by-step explanation:

The n th term of a GP is

$a_{n}$ = a₁ $r^{n-1}$

where a₁ is the first term and r the common ratio

Here a₁ = 18 and a₆ = - $\frac{2}{27}$ , then

18 $r^{5}$ = - $\frac{2}{27}$ ( divide both sides by 18 )

$r^{5}$ = - $\frac{1}{243}$ ( take the fifth root of both sides )

r = $\sqrt[5]{-\frac{1}{243} }$ = - $\frac{1}{3}$

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Step-by-step explanation:

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3 years ago

Cancel the common factor of the numerator and the denominator and write specified expression

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Step-by-step explanation:

Hello,

I hope you mean to cancel the common factor that exists in numerator and denominator,right.

so, Let's look for the common factor, 

here, the expression is, 

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so, here we find the common factor is (x-2)

now, we have to cancel it. And after cancelling we get,

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Note:{ we cancel the common factor if the common factors are in multiply form.}

Hope it helps 

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3 years ago

-3(5x + 6) + 2 = 2(8 + 8x) - 1

bija089 [108]

So first, we multiply out the brackets.
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3 years ago

The 6 term of a G.P is -2\27 and it's first term is 18.what is the common ratio​

The 6 term of a G.P is -2\27 and it's first term is 18.what is the common ratio