anonymous
  • anonymous
3. The diagonals of an isosceles trapezoid ,BD and AC, are labeled 5x and 3x + 40. Find the length of the diagonals. 3. The diagonals of an isosceles trapezoid ,BD and AC, are labeled 5x and 3x + 40. Find the length of the diagonals. @Mathematics
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
5
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
how did you get 5

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anonymous
  • anonymous
becuz i am awesome
anonymous
  • anonymous
.........
anonymous
  • anonymous
can you please show me how to do it...?
anonymous
  • anonymous
do not second guess me mortal
anonymous
  • anonymous
I guess it to be 20
anonymous
  • anonymous
............ in any other case i would come back at you with disgust for mortals but i really have to get this done so can you please help me
anonymous
  • anonymous
ok i shall help you
anonymous
  • anonymous
i think my work here is done
anonymous
  • anonymous
o.O dear shabeer please help
anonymous
  • anonymous
diagonals of an isosceles trapezoid are equal in length
anonymous
  • anonymous
As this is an isosceles trapezoid the line segments AD and BC are equal in length. So I suppose Diagonal to be equal and 5x = 3x+40. A linear equation in one variable.
anonymous
  • anonymous
5x and 3x + 40. so 5x = 3x + 40 5x - 3x = 40 x = 40/2 x = 20
anonymous
  • anonymous
so 5x = 5*20 = 100 3x + 40 = 3*20 + 40 = 60 + 40 = 100
anonymous
  • anonymous
Your right, Harikat. I too wanted to type the same thing.
anonymous
  • anonymous
Ohh.... we were working on parallel tracks....☺
anonymous
  • anonymous
lozl the both of u r so cute haha
anonymous
  • anonymous
In your profile : you said you hate math. It's such an excellent subject. It's my favourite
smartbrain
  • smartbrain
@Atsie this is a question I am stumbled on.
smartbrain
  • smartbrain
In this step 5x and 3x + 40. so 5x = 3x + 40 5x - 3x = 40 In this step why did they switch the equals sign and how do you know its minus not plus. @Atsie x = 40/2 x = 20
Atsie
  • Atsie
@smartbrain I gotta go right now, I'll be back in an hour and then I'll answer ok?
smartbrain
  • smartbrain
I will probably be gone, but sure, that will help explain it. Ill see if somebody else can explain it meanwhile.
smartbrain
  • smartbrain
@AihberKhan can you possibly explain?
AihberKhan
  • AihberKhan
@smartbrain Okay, so they are simply subtracting \(3x\) from both sides. Since they are subtracting, the positive \(3x\) becomes negative. You see? Also, they did not switch the equals sign they subtracted \(3x\) from both sides.
smartbrain
  • smartbrain
How did they conclude that the 3x is to be subtracted from both sides and not the 5x?
AihberKhan
  • AihberKhan
If the \(5x\) is subtracted from both sides, then there will only be ONE side! Because if the \(5x\) was subtracted it would be \(=3x - 40 - 5x\) which simply can't happen.
smartbrain
  • smartbrain
I see, so you are trying to eliminate the x in the problem? Right?
AihberKhan
  • AihberKhan
You are not trying to eliminate it. You are trying to isolate it. :) @smartbrain
smartbrain
  • smartbrain
Ok this answers my question. Thank you.
AihberKhan
  • AihberKhan
No problem! :) Hope this helped! Have a great day! :) Also a medal would be much appreciated! Just click best response next to my answer. Thank You! Also, a fan will be much appreciated as well! Just hover over my avatar and click “Become a fan”. This will tell you whenever I am online so you can ask me for help in any of your other questions! If you see that I am online and need help with a question, just tag me in your question! @smartbrain

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