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Vikentia [17]
3 years ago
15

Evaluate the expression when r = 3. 15r

Mathematics
1 answer:
Liula [17]3 years ago
8 0

Answer:

45

Step-by-step explanation:

Because if you replace the r with 3, it would be 15(3).

15(3) is the same as 15 × 3.

15 × 3 = 45

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Please Mark as brainliest it will make my day! Thank you! :)

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It would be a great help if someone could give me the answer to this.
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Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. A vending m
kotykmax [81]

Answer:

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5 0
3 years ago
A1 = 10 and an =an -1 +2
Vesna [10]

I assume you're asking to solve for the n-th term in the sequence, a_n.

From the given recursive rule,

a_n = a_{n-1} + 2 \implies a_{n-1} = a_{n-2} + 2

and by substitution,

\implies a_n = a_{n-2} + 2\times2

Similarly,

a_n = a_{n-1} + 2 \implies a_{n-2} = a_{n-3} + 2

\implies a_n = a_{n-3} + 3\times2

The pattern continues, so that we can write the n-th term in terms of the 1st one:

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So the first few terms of the sequence are

{10, 12, 14, 16, 18, 20, …}

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