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3 years ago

Find the exact value of the eighth term of the geometric sequence: 648,216,72,24

Mathematics

1 answer:

NikAS [45]3 years ago

7 0

8th term is 0.30

Step-by-step explanation:

Step 1: nth term of a GP = a × r^n-1

Step 2: Find r.

⇒ r = a2/a1 = 216/648 = 1/3

Step 3: Calculate 8th term. a = 648, r = 1/3 and n = 8

⇒ 8th term = 648 × (1/3)^8-1 = 648 × (1/3)^7 = 648/2187 = 0.30

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3 years ago

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svetlana [45]

Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

≈0.487

Step-by-step explanation:

I think this is your full question right?

Jose surveyed the length of TV commercials (in seconds). Find, to 3 decimal places, the experimental probability that a randomly chosen TV commercial will last:

Length Frequency

0-19 17

20-39 38

40-59 19 20 to 39 seconds.

60+ 20 to 4

Here is my anwer:

experimental probability = relative frequency = $\frac{number of oserved occuerencies}{total number of oserved occuerencies}$

Total frequencies = 17 + 38 +18 + 4 = 78

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Answer:

Step-by-step explanation:

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