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4 years ago

What is the 12th term of the sequence 3,6,12,24....

Mathematics

2 answers:

Ymorist [56]4 years ago

8 0

The answer to this is:

Sati [7]4 years ago

7 0

$a_{0}$ =3

r=common ratio: 12/6=2; 6/3=2

r=2, $a_{n}$ = $2^{n-1}$ *3

plug in 12 for n:

$a_{12}$ = $2^{12-1}$ *3

$a_{12}$ = $2^{11}$ *3

$a_{12}$ =2048*3

$a_{12}$ =6144

The twelfth term in the sequence is 6144

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3 years ago

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<u>Step 1</u>: Expand by distributing terms.

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3 years ago

40.51x+12.45y=666.64

irga5000 [103]

Answer:

The graph of the equation 40.51x+12.45y=666.64 is attached with the answer where the horizontal axis represents the X axis and the vertical axis represents Y axis.

To plot the graph physically just find two points lying on the line. Mark the points on the graph sheet and then join them. This will give you the line represented by the equation.

To find points on the line assume the value of any one variable, substitute it in the equation, then solve the equation to find the value of other variable. For example : assume y = 1; substitute the value of y in the equation;

⇒ 40.51x + 12.45×1 = 666.64

⇒ 40.51x = 666.64 - 12.45

⇒ 40.51x = 654.19

⇒ x = $\frac{654.19}{40.51}$

⇒ x ≈ 16.149

Therefore point ( 16.149 , 1 ) lie on the graph of the equation.

***Only two points are required to plot this graph just because it represents a straight line, that we can conclude just by observing the equation. If in an equation the power of x is 1 or 0 and power of y is 1 or 0 then only it will represent a straight line in 2-D plane.***

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