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3 years ago

URGENT I NEED HELPPPPP

Mathematics

2 answers:

lorasvet [3.4K]3 years ago

7 0

Answer:

8/15

Step-by-step explanation:

Using Pythagorean Theorem the length of XZ is 15.

tan X = opposite / adjacent = YZ / XZ = 8 / 15.

rjkz [21]3 years ago

3 0

Answer:

I think it is C, 8/15, sorry If I am wrong

Step-by-step explanation:

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PLEASE!!!!! HELP ME!!!!!!

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Answer:

$15 = a_1 r^4$ (1)

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If we divide equations (2) and (1) we got:

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And then $r= \frac{1}{15}$

And then we can find the value $a_1$ and we got from equation (1)

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And the best option would be:

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Step-by-step explanation:

the general formula for a geometric sequence is given by:

$a_n = a_1 r^{n-1}$

For this case we know that $a_5 = 15, a_6 = 1$

Then we have the following conditions:

$15 = a_1 r^4$ (1)

$1 = a_1 r^5$ (2)

If we divide equations (2) and (1) we got:

$\frac{r^5}{r^4}= \frac{1}{15}$

And then $r= \frac{1}{15}$

And then we can find the value $a_1$ and we got from equation (1)

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And then the general term for the sequence would be given by:

$a_n = 759375 (\frac{1}{15})^n-1 , n=1,2,3,4,...$

And the best option would be:

C) a1=759,375; an=an−1⋅(1/15)

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