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zlopas [31]
3 years ago
13

*

Mathematics
1 answer:
Phoenix [80]3 years ago
6 0

Answer:

Step-by-step explanation:

Are the sides consistent with the Pythagorean Theorem?

6² + 8² ≟ 9²

36 + 64 ≠ 81, so it is not a right triangle.

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What is the sum of a geometric sequence 1, 3, 9, ... if there are 12 terms?
attashe74 [19]
We know that
a1=1
a2=3
a3=9
a2/a1=3/1----> 3
a3/a2=9/3----> 3
<span>common ration r is equal to 3
number of terms n  is 12

The </span><span>Sum of geometric series is given by the formula
</span>Sum=a1*[1-r<span>^n]/[1-r]
</span>Sum=1*[1-3^12]/[1-3]-----> Sum=[1-3^12]/[1-3]----> [3^12-1]/[3-1]
<span>Sum=531440/2-----> 265720

the answer is
265720



</span>
4 0
3 years ago
Find the dimensions of a rectangle whose perimeter is 22 meters and whose area is 28 square meters.
UkoKoshka [18]
I hope this helps you

3 0
3 years ago
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On mars if you hit a baseball, the height of the ball
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5 0
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I dont understand this!
DaniilM [7]

Answer:perimeter  

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4 0
3 years ago
What is -6n+5=1? Thanks!
ivann1987 [24]
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6 0
3 years ago
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