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2 years ago

Given the recursive formula shown, what are the first 4 terms of the sequence?

Mathematics

1 answer:

Lorico [155]2 years ago

3 0

Answer:

5,20,80,320

Step-by-step explanation:

a1 = 5

an = 4 an-1

Let n = 2

a2 = 4 * a1 = 4*5 = 20

Let n = 3

a3 = 4 * a2 = 4*20 = 80

Let n = 4

a4 = 4 * a3 = 4*80 = 320

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Please show me step by step so I can learn to explain it to my son.

aleksklad [387]

These are the steps:
1. Find the area of the trapezium {Whole figure).
2. FInd the area of the rectangle (unshaded).
3. Area of the shaded = Area of trapezium - Area of the rectangle.

Step 1: Find the area of the trapezium:

Formula : Area of trapezium = 1/2 (a + b)h

Area = 1/2 ( 25 + 15) (12) = 240 yd²

Step 2 : Find the area of the rectangle:

Formula : Area = Length x Width

Area = 12 x 3 = 36 yd²

Step 3: Find the shaded region:

240 - 36 = 204 yd²

Answer: 204 yd²

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2 years ago

Which of the following is a polynomial with roots 3, 5i, and −5i?

jek_recluse [69]

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"Associate with people who are likely to improve you."

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2 years ago

An airplane captain must have a minimum of 1500 hours of flying experience. Tom has 715.

MatroZZZ [7]

Answer:

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Step-by-step explanation:

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2 years ago

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malfutka [58]

Answer:

£15.7

Step-by-step explanation:

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1600p to Pounds = £26.66 (1600 divided by 60)

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360p to Pounds = £6 (360 divided by 60)

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1 year ago

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Answer:

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Step-by-step explanation:

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