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Semmy [17]
3 years ago
7

Which situation is linear ?

Mathematics
1 answer:
QveST [7]3 years ago
4 0

Answer:

D. The population of a town in Increasing by ten people each year

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Write an equation then solve
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3 years ago
Constructing a brick staircase: A brick staircase has a total of 30 steps. The bottom step requires 100 bricks. Each successive
galben [10]
A) The first step needs 100 bricks, the second needs 98, the third needs 96, and so on. Therefore the number of bricks for the nth step is: a_n = a_1 + d(n-1), where a_1 = 100 (the first term), d = -2 (difference).
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b) The total staircase will need: 100 + 98 + 96 + ... +  44 + 42, and there are n = 30 terms. Using the formula for the sum of an arithmetic sequence:
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7 0
3 years ago
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