Move the correct words to the angle.

Mathematics

1 answer:

ElenaW [278]3 years ago

7 0

Answer:

top box: ray

bottom box: endpoint

Step-by-step explanation:

top box: a ray is a line that doesn't stop and that is represented by a arrow on the end of it

bottom box: an end point is where a ray, or line segment stop and since i see two rays that stop there it is an endpoint

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Which expression is equivalent to 60 Σ n=1 (2n − 1)2 ? Check all that apply.

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Answer:

B, D

Step-by-step explanation:

The quadratic expands to ...

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The coefficients can be factored out of the sum, so ...

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The sum of 60 ones is 60:

$\displaystyle\sum_{n=1}^{60}{1}=1+1+1+\dots+1=60$

So, the sum can be written as ...

$\displaystyle\sum_{n=1}^{60}{(2n-1)^2}\\\\=\boxed{4\sum_{n=1}^{60}{n^2}-4\sum_{n=1}^{60}{n}+\sum_{n=1}^{60}{1}}\\\\=\boxed{4\sum_{n=1}^{60}{n^2}-4\sum_{n=1}^{60}{n}+60}$

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Answer:

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Answer:

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Step-by-step explanation:

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