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marissa [1.9K]
3 years ago
11

{17}{15}={10}{2x-2} x =

Mathematics
2 answers:
zhuklara [117]3 years ago
7 0

Answer: 12.85

Step-by-step explanation: If you start off by multiplying them then. You'd get 225=20x-2. So from there you subtract the 2, to isolate the 20x. Then divide bother sides by 20 to get 12.85.

Nitella [24]3 years ago
3 0

Answer:

The answer is 5.4

Step-by-step explanation:

{17}{15}={10}{2x-2} x =92/17

92/17 rounded to the nearest tenth is 5.4117...

5.4

im late to answer this question but to help people in the future with this same question... here you go x)

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Answer:

See proof below

Step-by-step explanation:

We have to verify that if we substitute a_n=4^n+2(-1)^n in the equation a_n=3a_{n-1}+4a_{n-2} the equality is true.

Let's substitute first in the right hand side:

3a_{n-1}+4a_{n-2}=3(4^{n-1}+2(-1)^{n-1})+4(4^{n-2}+2(-1)^{n-2})

Now we use the distributive laws. Also, note that (-1)^{n-1}=\frac{1}{-1}(-1)^n=(-1)(-1)^{n} (this also works when the power is n-2).

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=4(4^{n-1})-6(-1)^{n}+8(-1)^{n}=4^n+2(-1)^n=a_n

then the sequence solves the recurrence relation.

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Step-by-step explanation:

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