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noname [10]
3 years ago
11

Is 3, 1, 1/3, 1/9,... a geometric sequence?

Mathematics
1 answer:
barxatty [35]3 years ago
7 0
a_1;\ a_2;\ a_3;\ a_3;\ ...;\ a_n;\ a_{n+1};...\ is\ a\ geometric\ sequence\\if\ a_{n+1}:a_n=const.\\-------------------\\a_1=3;\ a_2=1;\ a_3=\dfrac{1}{3};\ a_4=\dfrac{1}{9}\\\\a_4:a_3=\dfrac{1}{9}:\dfrac{1}{3}=\dfrac{1}{9}\cdot\dfrac{3}{1}=\dfrac{1}{3}\\\\a_3:a_2=\dfrac{1}{3}:1=\dfrac{1}{3}\\\\a_2:a_1=1:3=\dfrac{1}{3}\\\\Answer:Yes.\ It's\ the\ geometric\ sequence.
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The parallelogram is reflected across the line y = x. Which of the following are coordinates of a vertex of the image?
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Answer:

A'(1,-5)

Step-by-step explanation:

The coordinates of the given quadrilaterals are

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The reflection in the line y=x has the mapping,

(x,y)\rightarrow(y,x)


We just have to swap the coordinates.


This implies that,


A(-5,1)\rightarrow A'(1,-5)


B(-4,3)\rightarrow B'(3,-4)


C(-2,1)\rightarrow C'(1,-2)


D(-3,-1)\rightarrow D'(-1,-3)


Therefore the correct answer is A.

A'(1,-5)

8 0
3 years ago
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Step-by-step explanation:

Since there are 30 days in November

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The half-life of a radioactive substance is the time required for half of a sample to undergo radioactive decay, or for the quan
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Answer:

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Step-by-step explanation:

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Algebraic equation is

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