anonymous
  • anonymous
can someone help me?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
What is the value of x? 9 12 6 2
anonymous
  • anonymous
i think it is 6...
anonymous
  • anonymous
@Psymon is that correct?

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Psymon
  • Psymon
Yes it is : )
anonymous
  • anonymous
thankss
anonymous
  • anonymous
@Psymon can you help me with another please??
Psymon
  • Psymon
Lol, lets see what ya got.
anonymous
  • anonymous
Theorem: The diagonals of a parallelogram bisect each other. Kim is writing the proof of the theorem using two properties of a parallelogram as shown below. • The opposite sides of a parallelogram are parallel. • The opposite sides of a parallelogram are congruent.
anonymous
  • anonymous
Using the two given properties, Kim proved that triangle AGB is congruent to triangle CGD using the ASA Postulate. What theorem can Kim use to prove that segment AG is congruent to segment CG, and that segment BG is congruent to segment DG to show that the diagonals bisect each other?
Psymon
  • Psymon
TO be honest, I know nothing of the theorems and postulates. I never once learned them. I can look and find measures of angles lengths of sides, but when it comes to the proofs of these things, I never have even done them in school x_x
anonymous
  • anonymous
lol aww okayy thanks anyways. can you check a multiple choice for me then?
Psymon
  • Psymon
Yeah, Ill try and look, lol.
anonymous
  • anonymous
Town 1 and Town 2 are situated 6 km apart on the bank of a river. The school and the church are 1km apart situated on the other bank of the river. The market is situated 5 km away from the school, as shown below.
anonymous
  • anonymous
How far is the school from Town 1? 11 km 25 km 12 km 30 km
anonymous
  • anonymous
i think its 25?
Psymon
  • Psymon
Yep xD
anonymous
  • anonymous
yayy lol
Psymon
  • Psymon
Haha, yeah, youre good at the multiple choice ones so far, lol.
anonymous
  • anonymous
lol yea but i just always second guess myself..bad habit
Psymon
  • Psymon
Well, its okay to second guess yourself, but first instinct is usually correct xD
anonymous
  • anonymous
haha yea i noticed
Psymon
  • Psymon
Well glad ya got them, though :3
anonymous
  • anonymous
thanks(:
anonymous
  • anonymous
hey i need your help again? @Psymon
anonymous
  • anonymous
Matt drew the diagram shown below and described it as an equilateral triangle with a square inside it. Point D is the midpoint of segment AC.
anonymous
  • anonymous
The geometry teacher pointed out that the triangle cannot be equilateral since side AC is not equal to AB. Which statement best explains why the measurements are incorrect? Segment AB ˜ 12 + 17.7 + 12 ˜ 41.7. Segment AB is 12 + 5 + 12 = 29. Segment AB is 12 + 12 + 12 = 36. Segment AB ˜ 12 + 12.5 + 12 ˜ 36.5.
anonymous
  • anonymous
im really not sure about this one but my best guess would be : Segment AB ˜ 12 + 12.5 + 12 ˜ 36.5.
anonymous
  • anonymous
you think that is right??
Psymon
  • Psymon
It isnt. Here is why:
anonymous
  • anonymous
Segment AB is 12 + 5 + 12 = 29. how about that one? but i still would like to know why(:
Psymon
  • Psymon
|dw:1378099264319:dw| ignoring the fact that I didnt draw it proportional, that inner part is a square. So all sides of that square are the same length. If we can find one side of that square, we can see just how long that AB segment is. Now there is a way to find it:
anonymous
  • anonymous
so my second guess was wrong too??
Psymon
  • Psymon
|dw:1378099394756:dw| Here I can highlight this triangle. One of the sides of the square is also a side of the triangle. Now because its a square whose side lies perfectly in line with the triangle, we can assume that this triangle is a right triangle. And because it is a right triangle and we know two sides, we can use pythagorean theorem to find out that missing side and, thusly, the length of all the sides of the square.
Psymon
  • Psymon
|dw:1378099476608:dw|
Psymon
  • Psymon
|dw:1378099551860:dw|
anonymous
  • anonymous
yayyy lol
Psymon
  • Psymon
Make sense? :P
anonymous
  • anonymous
thanks you're amazing. & yepp
Psymon
  • Psymon
Okay, glad it does :3
anonymous
  • anonymous
im sorry to bother but may i ask another?
anonymous
  • anonymous
The figure below shows line AB parallel to line CD. Segment EF is parallel to segment GH. What is the value of x?
Psymon
  • Psymon
Yeah, sure xD
anonymous
  • anonymous
its that one
Psymon
  • Psymon
Did you have a guess for it by chance?
anonymous
  • anonymous
not for this one i think my brain is giving up & so am i lol
Psymon
  • Psymon
Alright, fair enough xD I dont know all the postulates or what they call the angles, but this is kind of a general rule. If a line intersects 2 parallel lines then: |dw:1378099944792:dw| The opposite corner angles are the same and x + y = 180. So looking at your picture, its telling youthat 2x + 10 and x + 40 are the exact same angle. So to solve for x, you do 2x + 10 = x + 40
anonymous
  • anonymous
15??O.o
Psymon
  • Psymon
2x + 10 = x + 40 -x -x x + 10 = 40 - 10 - 10 x = 30
anonymous
  • anonymous
woah i was off .... lol
Psymon
  • Psymon
But you can see how I got it, right? xD
anonymous
  • anonymous
yes(:
Psymon
  • Psymon
Okay, cool xD Yeah, I know hwo to get the measures, I just dont knwo what anything is called xD Congrunet angles, corresponding angles, theorem blah blah x_x
anonymous
  • anonymous
lol yea i dont really need it for these luckily cause i would've been screwed
anonymous
  • anonymous
The figure below shows a pair of parallel oil pipelines, PQ and RS. EF and GH are maintenance walkways that are parallel to each other.
anonymous
  • anonymous
What is the measure of angle GMS? 240° 150° 120° 300°
anonymous
  • anonymous
is that one 120??
Psymon
  • Psymon
Yep :3
Psymon
  • Psymon
Because of the I have no idea theorem : )
anonymous
  • anonymous
yay lmao
anonymous
  • anonymous
Sophia wrote the equation of the circle in the center radius form as (x - p)2 + (y - q)2 = 25. The value of p + q is _____.
Psymon
  • Psymon
Yeah, these arent that bad at least xD
anonymous
  • anonymous
know that one??
anonymous
  • anonymous
yea they're not. it was just so many and now im at the end so im just like ughhhh
Psymon
  • Psymon
Yeah, that one I can do. This one I can maybe do an explanation for, though xD Can you tell what the coordinates of the center of the circle are?
anonymous
  • anonymous
okay (: is it 3,2??
anonymous
  • anonymous
i need help with 2 more and then im done btw:3
Psymon
  • Psymon
Yep :) Now the equation of a circle is: \[(x-h)^{2}+(y-k)^{2}=r ^{2}\]Where h is the x-coordinate and k is the y-coordinate. Now, even though we can get the answer now, I just want to make sure we know how it is written. Now even though I wrote the letters h and k, these are what theyre supposed to be. Its just they used p and q in this case. So the mainthing to know and to not get confused by is that minus sign in front of h and k MUST be there. If the negative is NOT there, there can be only one reason. For example (x-(-2))^2 = (x+2)^2 SO basically, if you see a plus sign there, its actually a negative number. Now for us, we dont have any negative coordinates, we have positive 3 and positive 2. Because of this, if we were to write the equation for this circle itd be: \[(x-3)^{2}+(y-2)^{2}=25 \]I just wanted to make sure we understood that first, though. So since 3 is what would be "p" and 2 is what would be "q", p + q = 5
anonymous
  • anonymous
yayy thank you(:
anonymous
  • anonymous
Quadrilateral ABCD in the figure below represents a scaled-down model of a walkway around a historic site. Quadrilateral EFGH represents the actual walkway. ABCD is similar to EFGH. What is the total length, in feet, of the actual walkway?
anonymous
  • anonymous
do you know that one?
Psymon
  • Psymon
Yeah. If theyre scaled down versions, then the sides have equal ratios. For example: |dw:1378100992311:dw| Because they are scaled down and congruent versions of each other, we can say this: \[\frac{ AB }{ EF }=\frac{ BC }{ FG }=\frac{ CD }{ GH }=\frac{ DA }{ HE } \]So basically, if we take two sides that are common between the two and divide them, we can then figure out all the other sides. So for us, we're given AB and EF. Because these two sides are the same, we can divide the two numbers and see what the ratio is. Now, I can choose the big figure to be on top of the fraction or the small number, it does not matter. So if I take EF and divide it by AB, I get 45/5 = 9. So what this means, since the small side of 5 multiplied by 9 gives you the big side of 45, I can multiply every small side by 9 to get the corresponding big side. So BC = 4, BC * 9 = 36, therefore FG = 36. CD = 4, 4 * 9 = 36, therefore GH = 36. DA = 3, 3 * 9 = 27, therefore HE =27. Make sense?
anonymous
  • anonymous
youre really good with explaining lol yes i understand^.^ can you help with my last one??
Psymon
  • Psymon
Go for it xD
anonymous
  • anonymous
George folds his origami paper along the dotted lines shown below so that the triangular flaps overlap exactly on the square.
anonymous
  • anonymous
If the dimensions of the origami paper are decreased by , what will be the new area of the paper? 98 square inches 196 square inches 49 square inches 147 square inches
anonymous
  • anonymous
btw it was supposed to say decreased by 1/2
Psymon
  • Psymon
I think I can get this, but since I dont know theorems and such I have to doa bit of drawing and checking xD
anonymous
  • anonymous
lol okay
anonymous
  • anonymous
i was thinking its 98..
Psymon
  • Psymon
Nah, its not.
anonymous
  • anonymous
or 49.. ghr im not even sure
anonymous
  • anonymous
yeaa i just realized it wasnt
Psymon
  • Psymon
49. I had to figure it out a certain way, but not sure if my way is the way its supposed to be done xDD
anonymous
  • anonymous
okay thank you so much im finally done :D
Psymon
  • Psymon
Yeah, no problem ^_^
anonymous
  • anonymous
guess what i passed with a 88^.^
anonymous
  • anonymous
but im SO exhausted... its been a long day. So goodnight and thank you for all the help<3 (: you're amazingggg! lol
Psymon
  • Psymon
Lol, just glad to help. Night ^_^

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