2 years ago

PLS PLS PLS HELP ME ILL GIVE 20 points.

Mathematics

1 answer:

lisov135 [29]2 years ago

8 0

Answer:

if you want to know the x is.

Step-by-step explanation:

(180°－4x)+(180°－6x)+2x=180°

x=22.5°

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What are the first three terms of the sequence modeled by the recursive function an=1/2an-1 when a1=1?

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Answer:

Option A is correct that is $1,\frac{1}{2},\frac{1}{4}$

Step-by-step explanation:

We have been given a formula $a_n=\frac{1}{2}\cdot a_n-1$

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We will put values of n in $a_n=\frac{1}{2}\cdot a_n-1$

when n=2 we get

$a_2=\frac{1}{2}\cdot a_2-1$

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when n=3

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$\Rightarrow a_3=\frac{1}{4}$

Therefore, Option A is correct that is $1,\frac{1}{2},\frac{1}{4}$

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