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3 years ago

What is the explicit rule for the sequence?

Mathematics

1 answer:

NISA [10]3 years ago

4 0

9514 1404 393

Answer:

an=12−1.5n

Step-by-step explanation:

The first term is 10.5.

The common difference is ...

9 - 10.5 = -1.5

The n-th term can be described by ...

an = a1 +d(n -1)

an = 10.5 -1.5(n -1) = 10.5 -1.5n +1.5 . . . . eliminate parentheses

an = 12 -1.5n

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Answer:

$cos^2\theta + sin^2\theta = 1$

Step-by-step explanation:

Given

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Required

Use the expression to prove a trigonometry identity

The given expression is not complete until it is written as:

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Going by the Pythagoras theorem, we can assume the following.

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So, we have:

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Having said that:

The expression can be further simplified as:

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Substitute values for sin and cos

$(\frac{b}{r})^2 + (\frac{a}{r})^2 = 1$ becomes

$cos^2\theta + sin^2\theta = 1$

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4 years ago

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Answer:

Your answer is 25:49

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Hope it helps...

Have a great day!!

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Step-by-step explanation:

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