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3 years ago

14

Mr chen is putting bricks down on his patio. The patio is 10 feet long and 4 feet wide. The bricks cost $2 per square foot. How

much will it cost mr chen to put bricks down on his patio?

1 answer:

Elodia [21]3 years ago

8 0

Answer:

10 x 4 = 40 square feet

40 Square Feet x $2 per square foot = $80.00

Step-by-step explanation:

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Answer:

$a_n = 8 + (n - 1) (-6)$

Step-by-step explanation:

Given

$a_1 = 8$

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Required

Determine the formula

Substitute 2 for n to determine $a_2$

$a_{2} = a_{2-1} - 6$

$a_{2} = a_{1} - 6$

Substitute $a_1 = 8$

$a_2 = 8 - 6$

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Next is to determine the common difference, d;

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$d = 2 - 8$

$d = -6$

The nth term of an arithmetic sequence is calculated as

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Substitute $a_1 = 8$ and $d = -6$

$a_n = a_1 + (n - 1)d$

$a_n = 8 + (n - 1) (-6)$

Hence, the nth term of the sequence can be calculated using $a_n = 8 + (n - 1) (-6)$

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