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son4ous [18]
3 years ago
7

I was constructing towers as you see below. I noticed that each

Mathematics
2 answers:
hram777 [196]3 years ago
7 0

Answer:

is there an equation for this or simple math?

OleMash [197]3 years ago
6 0

Answer:

5 Blocks=4 blocks (on sides) 10 Blocks=9 blocks (on sides)

Step-by-step explanation:

You subtract one set of blocks (on sides) each time. That's it! Hope this helps!

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Step-by-step explanation:

\displaystyle\large \boldsymbol{Rule: t_n=S_{n}-S_{n-1}}  \\\\\\S_n=7n-2n^2   \ \ \ \ then  \\\\\Longrightarrow S_{n-1}=7(n-1)-2(n-1)^2 =7n-7-2n^2+4n-2 \\\\then \\\\\\S_{n}-S_{n-1}=7n\!\!\!\!\!\!\diagup-2n^2\!\!\!\!\!\!\diagup-7n\!\!\!\!\!\!\diagup+7+2n^2\!\!\!\!\!\!\diagup-4n+2=9-4n \\\\t_n=9-4n => t_1=5\\\\d=t_2-t_{1}=1-5=-4

6 0
3 years ago
Solve the system of equations {3x-y=6 { 6x+y=21 explain the steps on how to do this please
posledela
I would set the equations on top of each other and subtract

6x+y=21
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________
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Then solve for x
X=5

To solve for y, plug 5 in for x for one of the equations
3 0
3 years ago
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Step-by-step explanation:

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