anonymous
  • anonymous
Help On Three Question Please!!!!!! Will Medal And Fan!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
@phi
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phi
  • phi
I would plot the points, and connect the dots as a first step
anonymous
  • anonymous
ok like this?
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phi
  • phi
in a parallelogram, the opposite sides are equal. It is easy to find the length of the top and bottom sides (you count) what do you get for the length of the top side?
anonymous
  • anonymous
6? on the top side.
phi
  • phi
yes, and 6 for the bottom also for the "sides" you need to use the distance formula do you know it?
anonymous
  • anonymous
Yes I Do
phi
  • phi
can you find the distance between (2,-2) and (5,3) ?
anonymous
  • anonymous
\[\sqrt{9+25}\]
phi
  • phi
yes, so \( \sqrt{34}\)
anonymous
  • anonymous
yes now what?
phi
  • phi
that is also the lenght of the other side perimeter is the sum of the 4 lengths \[ 6 + \sqrt{34}+ 6 + \sqrt{34}\]
phi
  • phi
you can combine "like terms" to make that a bit nicer
anonymous
  • anonymous
Wait so you add them?
phi
  • phi
yes, add the lengths. that is the definition of perimeter: total distance "around" the figure
anonymous
  • anonymous
\[12+\sqrt{68} \]
phi
  • phi
It is Greek: peri around, meter = measure or length
phi
  • phi
sqrt(a) + sqrt(a) is not the same as sqrt(2*a) all you can do is say: I have one sqr(34) plus another sqr(34). How many sqr(34)'s do I have ?
anonymous
  • anonymous
2 sqrt(34) ?
phi
  • phi
yes so \[ 12 + 2\sqrt{34} \] is the answer they want
anonymous
  • anonymous
ok so same on this one right?
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phi
  • phi
same idea, except opposite sides need not be equal , so it's more work First plot the points to see "what is what"
anonymous
  • anonymous
So this?
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phi
  • phi
yes. you can use the distance formula for all 4 sides, but for 3 of them, you can just count
anonymous
  • anonymous
So Top Side = 3 Bottom Side = 9 Right Side = 5
phi
  • phi
now the last side, you use the distance formula
anonymous
  • anonymous
\[\sqrt{36+25}\]
phi
  • phi
what do you get for the perimeter?
anonymous
  • anonymous
\[\sqrt{61}\]
phi
  • phi
that is the length of the 4th side. the perimeter is the sum of the 4 sides.
phi
  • phi
I assume you mean 17+sqr(61)
anonymous
  • anonymous
yes
anonymous
  • anonymous
so it is \[17+\sqrt{61}\]
phi
  • phi
yes
anonymous
  • anonymous
is that it?
phi
  • phi
yes, that is the perimeter of the figure, in "exact" form (we could change the sqr(61) to a decimal, but it would only be approximate)
anonymous
  • anonymous
This Last One
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anonymous
  • anonymous
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anonymous
  • anonymous
Top And Bottom are 7
phi
  • phi
yes, you can do these problems
anonymous
  • anonymous
\[\sqrt{25+64}\]
anonymous
  • anonymous
\[\sqrt{89} \] for both sides right and left
anonymous
  • anonymous
\[14+2\sqrt{89}\]
phi
  • phi
looks good
anonymous
  • anonymous
@phi you taught me how to do this!
anonymous
  • anonymous
Thanks!

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