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bija089 [108]
3 years ago
11

Find the second, fifth, and ninth terms of the sequence. an = -7 + (n - 1) 4

Mathematics
1 answer:
castortr0y [4]3 years ago
5 0

Answer:

- 3, 9, 25

Step-by-step explanation:

To find the required terms of the sequence substitute n = 2, 5, 9 into the given rule, that is

a_{2} = - 7 + (2 - 1)4  = - 7 + (1 × 4) = - 7 + 4 = - 3

a_{5} = - 7 + (5 - 1)4 = - 7 + (4 × 4) = - 7 + 16 = 9

a_{9} = - 7 + (9 - 1)4 = - 7 + (8 × 4) = - 7 + 32 = 25

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A parallelogram has an area of 300 square kilometers and a height of 20 kilometers. What is the length of the base?
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Answer: the length of the base is 15 kilometers.

Step-by-step explanation:

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300 = Length of base x 20

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