Help with math please?! 10 points
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Help with math please?! 10 points

[From: ] [author: ] [Date: 12-08-13] [Hit: ]
Is the square root of 400rational or irrational? Explain your reasoning.If you could help me figure out/answer anyone or all, thatd be a great help!:) 10 points to the most helpful answer.-1) Rectangle because 2 lengths are 7 and 2 lengths are 10.......
1. Given that the points form a figure with 4 right angles, do the points (2, 2) (12, 2) (12, -5) and (2, -5) represent the vertices of a square or a rectangle?

2. Is 25 a perfect square? explain.

3. An original rectangle has a length of 10 and a width of 28 . What happens to the area if the new width is one quarter the original width? Verify your answer.

4.Is the square root of 400 rational or irrational? Explain your reasoning.


If you could help me figure out/answer anyone or all, that'd be a great help!:) 10 points to the most helpful answer.

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1) Rectangle because 2 lengths are 7 and 2 lengths are 10.

2) Yes. 5 * 5 = 25 (Meaning 5 and 5 are equal) because a perfect square is a number that can be expressed as the product of two equal INTEGERS.

3) width originally = 28
28 * .25 = 7.
new area = 7 * 10
New area = 70

So it drops from 280 to 70.
That means the area also drops to a quarter of what it originally was.

4) Rational.

√400 = 20 which is rational.

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1. Rectangle because the base length in the x-axis is (12-2) so 10 and the height (y-axis) is (2-(-5) so 7, 10 does not equal 7 so it has to be a rectangle.

2. Yes because the root of 25 is a whole integer (no decimals)

3. A = bh, A = (bh)/4, A = 10 * (28/4), A = 70 and the Area originally was 280

4. rational..

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What do you need HELP with?

All I see are a bunch of questions that look like you copied directly from an assignment.


ADDITIONAL DETAILS:
Well tell us what you do not understand.
Because It's stupid to use Yahoo Answers to cheat on an assignment.

If you don't understand, try figuring out how to do the problem, not just the answer. Simple

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2.) 25 is a perfect square because 5x5 is 25
4. The square root of 400=20 because 20^2 Is 400. 20 is a rational #.
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