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3 years ago

Find an explicit rule for the nth term of the sequence. 7, 21, 63, 189, ...

Mathematics

1 answer:

SpyIntel [72]3 years ago

8 0

Answer:

$7 \times {3}^{n - 1}$

Step-by-step explanation:

using form:

$a \times {r}^{n - 1}$

where a: starting number

where r: common ratio (in this case each next term is 3 times previous term)

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lakkis [162]

Answer: D

Step-by-step explanation:

It seems there is two ways to solve this, remember that this is just one of them.

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The angles opposite the equal sides in an isosceles triangle are congruent. It is given that one of these angles is 70 degrees, so the other one must be 70 degrees as well.

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Step-by-step explanation:

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