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diamong [38]
3 years ago
15

A geometric sequence has a first term of 3 and a fourth term of 81÷8. Find the eighth term

Mathematics
1 answer:
tatuchka [14]3 years ago
5 0

Answer:

6561 / 128

Step-by-step explanation:

The nth term of a geometric sequence is:

a = a₁ (r)ⁿ⁻¹

The first term is 3, and the fourth term is 81/8.

81/8 = 3 (r)⁴⁻¹

27/8 = r³

r = 3/2

The eighth term is therefore:

a = 3 (3/2)⁸⁻¹

a = 6561 / 128

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Answer:

b

Step-by-step explanation:

The median price is between $20,000 and $30,000.

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8 0
2 years ago
When there are 20 sheep, each sheep has 100 square yards of grazing area . How many yards are available for each sheep when ther
ZanzabumX [31]

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80 square yards

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Referring to the figure, find the volume of the solid<br> shown. Round to the nearest whole number.
mr_godi [17]

Answer:

846 m³

Step-by-step explanation:

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3 0
3 years ago
A salesman has a base salary of $1,400. He receives an additional 3.5% commission on his total sales. Last month his total salar
muminat
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7 0
3 years ago
Read 2 more answers
an investor invested a total of 2500 dollars in two mutual funds.one fund earned 5 percent profitwhile the other earned 3 percen
bonufazy [111]

Total investment=$2500

Let say David earned 5% profit and Harry earned 3% profit.

If <u>David</u> invested y dollar in mutual fund then <u>Harry</u> would invest,

Harry would invest,$(2500-y)

Total profit would equal to sum of 5% of money <u>David</u> invested and 3% of money <u>Harry</u> invested,

So,

5% × y +3% ×(2500-y)=<u>total profit</u>

0.05×y+0.03×(2500-y)=$111

0.05y+0.03×2500-0.03y=111

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0.02y=111-75

y=36/0.02

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The amount invested by <u>Harry</u> would be,

=$(2500-1800)

=$700

4 0
3 years ago
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