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NISA [10]
2 years ago
9

Which explicit formula describes the sequenceuse the picture for the full question​

Mathematics
1 answer:
Murrr4er [49]2 years ago
7 0

Answer:

  • A. aₙ = (2/7)ⁿ⁻¹

Step-by-step explanation:

<u>According to sequence we observe:</u>

  • the first term is a₁ = 1
  • the common ratio is r = 2/7

<u>Equation of nth term of GP:</u>

  • aₙ = a₁r°⁻¹

<u>Substitute to get:</u>

  • aₙ = 1*(2/7)ⁿ⁻¹ = (2/7)ⁿ⁻¹

Correct choice is A

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in a history class, the girl to boy ratio is 9 to 5. if there is a total of 70 students how many boys is there
DedPeter [7]

Answer:

25 boys.

Step-by-step explanation:

To solve this problem, first add the two parts of the ratio. 9 + 5 = 14. Then divide 70 by 14 to get 5. Since the total is 5 times the ratio total, multiply both sides of the ratio by 5. The result is 45 : 25. If you add them together, you get a total of 70. Therefore, there are 25 boys in the class.

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3 years ago
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The profit a company urns every month depends on the amount of product sold, p, for $855 each and the amount spent in rent, util
Kamila [148]

Answer:

CEO earns $31,045.5

Step-by-step explanation:

Price of each product = $855

Number of product sold = 250

Total revenue = price × quantity

= 855 × 250

= $213,750

Total expenditure = $6,780

Profits = Total revenue - Total expenditure

= 213,750 - 6,780

= $206,970

Profits = $206,970

The CEO of the company earns 15% of this profit

Amount CEO earns = 15% of $206,970

= 15/100 × 206,970

= 0.15 × 206,970

= $31,045.5

CEO earns $31,045.5

8 0
3 years ago
Help please I don’t know the answer
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Is it 5•10 power of 2
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Two hundred fifty people were surveyed to determine their favorite mode of transportation. What number of people chose
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Cot 2 2x – 4cot2x + 3 = 0
jeyben [28]

x = 9.21° or x = 22.5°

cot²2x – 4cot2x + 3 = 0

Let cot2x = y

y² - 4y + 3 = 0

Factorizing, we have

y² - y - 3y + 3 = 0

y(y - 1) -3(y - 1) = 0

(y - 1)(y - 3) = 0

y - 1 = 0 or y - 3 = 0

y = 1 or y = 3

Since cot2x = y

cot2x = 1 or cot2x = 3

1/tan2x = 1 or 1/tan2x = 3

tan2x = 1 or tan2x = 1/3

2x = tan⁻¹(1) or 2x = tan⁻¹(1/3)

2x = 45° or 2x = 18.43°

x = 45°/2 or x = 18.43°/2

x = 22.5° or x = 9.21°

So, x = 9.21° or x = 22.5°

Learn more about cotx here:

brainly.com/question/15546709

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