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neonofarm [45]
3 years ago
5

If the 5th term in a geometric sequence is 162, and the common ratio is 3. What is the first term in the sequence?

Mathematics
1 answer:
Lana71 [14]3 years ago
3 0

Answer:

2

Step-by-step explanation:

a2 = a1×3

a3 = a2×3 = a1×3×3

=>

an = an-1 × 3 =

a1 \times  {3}^{n - 1}

a5 = 162 = a1×3⁴ = a1×81

a1 = 162/81 = 2

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The heat developed in an electric wire varies jointly as the wires resistance, the time the current flows, &amp; the square of t
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Step-by-step explanation:

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3 years ago
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p-6p+7=3(2p-3)-4(-10+4p

We move all terms to the left:

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We add all the numbers together, and all the variables

-5p-(3(2p-3)-4(4p-10)+7=0


8 0
3 years ago
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