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Vinvika [58]
3 years ago
5

Can someone help with geometry?

Mathematics
1 answer:
grin007 [14]3 years ago
6 0

Answer:

SSS

Step-by-step explanation:

bc all the sides are congruent.

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The answer to this very difficult question is 10 :)
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Prove this identity sin(2A)=2sinAcosA.
34kurt
The solution for proving the identity is as follows:

sin(2A) = sin(A + A) 
As sin(a + b) = sinacosb + sinbcosa, 
<span>sin(A + A) = sinAcosA + sinAcosA 
</span>
<span>Therefore, sin(2A) = 2sinAcosA

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7 0
2 years ago
Which shows the rational expression written using the least common denominator?
aleksandr82 [10.1K]

Answer:

(x + 1)/4x² + 4(x + 1)/4x²

Step-by-step explanation:

x+1/4x² + x+1/x²

The above can be simply as follow:

Find the least common multiple (LCM) of 4x² and x². The result is 4x²

Now Divide the LCM by the denominator of each term and multiply the result with the numerator as show below:

(4x² ÷ 4x²) × (x + 1) = x + 1

(4x² ÷ x²) × (x + 1) = 4(x + 1)

x+1/4x² + x+1/x² = [(x + 1) + 4(x + 1)]/ 4x²

= (x + 1)/4x² + 4(x + 1)/4x²

Therefore,

x+1/4x² + x+1/x² = (x + 1)/4x² + 4(x + 1)/4x²

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3 years ago
five sides of a decagon each measure 3 in , the perimeter of the decagon is 40 in, what is the link of each remaining side, if e
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Answer:

A=πr2

Step-by-step explanation:

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