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UkoKoshka [18]
3 years ago
11

-2+d=-3 got no clue on how this works

Mathematics
1 answer:
Vsevolod [243]3 years ago
3 0

Answer:

<h2>d = -1</h2>

Step-by-step explanation:

-2+d=-3\\\\\mathrm{Add\:}2\mathrm{\:to\:both\:sides}\\-2+d+2=-3+2\\\\Simplify\\d=-1

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Find the 12th term of the following geometric sequence.<br> 10, 30, 90, 270,
DanielleElmas [232]

Answer:

<h3>The 12th term is 1771470</h3>

Step-by-step explanation:

Since the above sequence is a geometric sequence

An nth term of a geometric sequence is given by

A(n) = a(r)^{n - 1}

where a is the first term

r is the common ratio

n is the number of terms

From the question

a = 10

To find the common ratio divide the previous term by the next term

That's

r = 30/10 = 3 or 90/30 = 3 or 270/90 = 3

Since we are finding the 12th term

n = 12

So the 12th term is

A(12) = 10( {3})^{12 - 1}

A(12) = 10 ({3})^{11}

<h3>A(12) = 1771470</h3>

Hope this helps you

8 0
3 years ago
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Answer:

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Step-by-step explanation:

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l = 78

3 0
3 years ago
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2 years ago
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Step-by-step explanation:

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