Write an explicit formula for An, the nth term of the sequence 15, 8, 1, ....
2 answers:
Answer:
= 22 - 7n
Step-by-step explanation:
There is a common difference d between consecutive terms, that is
8 - 15 = 1 - 8 = - 7
This indicates the sequence is arithmetic with explicit formula
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 15 and d = - 7 , then
= 15 - 7(n - 1) = 15 - 7n + 7 = 22 - 7n ← explicit formula
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One glass of milk has 11 carbs and one snack bar has 14 carbs.
Step-by-step explanation:
Let,
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Snack bar = y
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4x+2y=72 Eqn 1
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Multiplying Eqn 2 by 2
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Putting y=14 in Eqn 1
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One glass of milk has 11 carbs and one snack bar has 14 carbs.
Keywords: linear equations, subtraction
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