anonymous
  • anonymous
What is the length of stack M N with bar on top ? Round to the nearest tenth of a unit. units
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
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anonymous
  • anonymous
WILL FAN AND MEDAL!!
anonymous
  • anonymous
@Hero

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More answers

anonymous
  • anonymous
Can you help me @Hero?
Hero
  • Hero
The quickest way to do it is to find the length of the unit segment. Then multiply by the total number of unit segments that span segment MN.
anonymous
  • anonymous
What??
anonymous
  • anonymous
@Vocaloid
Hero
  • Hero
The unit segment. If you notice, the entire length of MN can be broken down into six equal segments. Of those six smaller segments, if you take one of them, it would represent the unit segment.
anonymous
  • anonymous
Can you walk me through using numbers I learn better that way.
Hero
  • Hero
Hero
  • Hero
When you have understood that, let me know.
anonymous
  • anonymous
When I said numbers I meant equations... like @Vocaloid does.
Hero
  • Hero
We'll get to that. But first, do you see that there are six unit segments?
anonymous
  • anonymous
yes
Hero
  • Hero
Okay, now all we have to do is take just one of those segments create a right triangle and apply pythagorean theorem. Notice the length of the legs of the triangle is just one unit. The pythagorean theorem is a^2 + b^2 = c^2. If we let a and b represent the length of the legs, then \(1^2 + 1^2 = c^2\) or \(1 + 1 = c^2\) or simply \(2 = c^2\). So \(\sqrt{2} = c\)
Hero
  • Hero
\(c\) is the length of one unit segment. Multiply that by 6 and you'll have the length of \(MN\)
UnkleRhaukus
  • UnkleRhaukus
surely it is simpler to apply pythag to the entire interval
anonymous
  • anonymous
I am SO lost.
Hero
  • Hero
In theory, yes, but if properly applied, this is the simpler method.
Hero
  • Hero
Or the more intuitive method.
anonymous
  • anonymous
I am NOT good at math at ALL... Sorry.
UnkleRhaukus
  • UnkleRhaukus
|dw:1434682942799:dw|
UnkleRhaukus
  • UnkleRhaukus
|dw:1434683007008:dw|
UnkleRhaukus
  • UnkleRhaukus
\[{MN}^2 = (4-(-2))^2 + (8-2)^2\\ {MN} = \sqrt{(4-(-2))^2 + (8-2)^2}\]
anonymous
  • anonymous
ok hold on.
anonymous
  • anonymous
4?
UnkleRhaukus
  • UnkleRhaukus
?
anonymous
  • anonymous
the answer for the equation... is it 4?
UnkleRhaukus
  • UnkleRhaukus
no
UnkleRhaukus
  • UnkleRhaukus
what is 8 - 2 ?
anonymous
  • anonymous
oh 6
UnkleRhaukus
  • UnkleRhaukus
and what is 4 - (-2) ?
anonymous
  • anonymous
6
UnkleRhaukus
  • UnkleRhaukus
so you have a right angled triangle, with two sides equal to 6, and you want to find the hypotenuse pythag. says: 6^2 + 6^2 = MN^2
UnkleRhaukus
  • UnkleRhaukus
ie MN = √ ( 6^2+6^2 )
anonymous
  • anonymous
72
UnkleRhaukus
  • UnkleRhaukus
dont forget to take the square root
anonymous
  • anonymous
8.49?
UnkleRhaukus
  • UnkleRhaukus
yes!, but careful, the question wants the answer accurate to the nearest tenth of a unit
anonymous
  • anonymous
ok I have 3 more can you help me @UnkleRhaukus ?
UnkleRhaukus
  • UnkleRhaukus
I want to check your final answer for this one before we move on, what is 8.49 with one decimal place values represented only
anonymous
  • anonymous
yeah I came to 8.5.
UnkleRhaukus
  • UnkleRhaukus
Good work!
anonymous
  • anonymous
So can you help me with the rest?
UnkleRhaukus
  • UnkleRhaukus
perhaps, (close this post and open a new question so the page doesn't get too long )
anonymous
  • anonymous
ok I'll tag you.
UnkleRhaukus
  • UnkleRhaukus
ok!

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