anonymous
  • anonymous
the perimeter of a triangle is 76 cm. side a of the triangle is twice as long as side b. side c is 1 cm longer than side a. find the length of each side.
Mathematics
schrodinger
  • schrodinger
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schrodinger
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anonymous
  • anonymous
hmm do u want the answer or just a hint?
anonymous
  • anonymous
the answer
anonymous
  • anonymous
|dw:1321814483458:dw| x+2x+2x+1=76 5x = 76-1 x=15

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anonymous
  • anonymous
the answer is a=30 b=15 c=31
anonymous
  • anonymous
b= 15, a = 30, c = 31
anonymous
  • anonymous
if you just want the answer, there it is
anonymous
  • anonymous
i meant the way u solve it and the answer
anonymous
  • anonymous
done! :-)
anonymous
  • anonymous
there look at my nub drawing
anonymous
  • anonymous
Sure... a = tan(b) b+tan(a)=pi c = 45/sin(c*a*pi^2) solve all that and you get a=30, b=15, c=31
anonymous
  • anonymous
i meant solve it for me
anonymous
  • anonymous
-.-.... x+2x+2x+1=76 5x = 76-1 x=15 b= 15, a = 30, c = 31
anonymous
  • anonymous
i will solve it for you... a = tan(b) b+tan(a)=pi c = 45/sin(c*a*pi^2) a = tan(b) = sin(pi)+4 a = sin(pi) + 4 a = 30 b +tan(a) = pi tan(a) = pi - b b = pi^2 + 4 b = 15 c = a+1 c = 30 + 1 c = 31 does that make sense?
anonymous
  • anonymous
the first side of a triangle is 8 m shorter than the second side. the third side is 4 times as long as long as the first side. the perimeter is 26 m. find the length of each side.
anonymous
  • anonymous
right, a=30, b=15, c=31
anonymous
  • anonymous
oh wait this is a new problem?
anonymous
  • anonymous
sorry, i'll solve this one too
anonymous
  • anonymous
a = cot(45)^2 + 30 a = pi^2 - e^t + 30 a = 3 b = a^2 / cot(45) * pi^3 b = a^2 - 30 b = 11 c = b+a^4 - n(4) c = b^2 -2a c = 12 so the answer is a=3, b=11, c=12
anonymous
  • anonymous
you can check it's right because a+b+c=26
anonymous
  • anonymous
i hope this was helpful
anonymous
  • anonymous
can u do it in another way
anonymous
  • anonymous
sec
anonymous
  • anonymous
i can help you do it another way. call the first side "a", the second side "b" and the third side "c". it says "the first side is 8 meters shorter than the second side". can you write that as an equation?
anonymous
  • anonymous
A is 8 meters shorter than B. can you write that down as an equation?
anonymous
  • anonymous
|dw:1321815214355:dw|
anonymous
  • anonymous
no u just do it
anonymous
  • anonymous
i did it already above
anonymous
  • anonymous
if you just want the answer copy what i wrote
anonymous
  • anonymous
if you actually want to learn then write something down
anonymous
  • anonymous
so... x-8+x+4(x-8) = 26
anonymous
  • anonymous
now solve that
anonymous
  • anonymous
for x
anonymous
  • anonymous
there you go, you have the answer two different ways now
anonymous
  • anonymous
ok i cant get it
anonymous
  • anonymous
can u please solve it
anonymous
  • anonymous
-.- take a paper and a pen/pencil and draw that diagram
anonymous
  • anonymous
I'm sorry nicki But I'm not going to help any more. You are not putting any effort into this at all. Like, 0 effort. You're just waiting for the answers so you can copy them down and turn them in.
anonymous
  • anonymous
i did
anonymous
  • anonymous
what did you do? show me how far you got and I will help
anonymous
  • anonymous
first side is 8 cm shorter so, b is x, a = x-8
anonymous
  • anonymous
third side is 4 times bigger than first side... so... 4(x-8)
anonymous
  • anonymous
they dotn tell u about b so we consider it 'x'
anonymous
  • anonymous
im trying my best ok
anonymous
  • anonymous
there fore we get the equation, x+4(x-8)+x-8=26
anonymous
  • anonymous
yeah
anonymous
  • anonymous
x+4x-32+x-8=26
anonymous
  • anonymous
solve it now, bring the x to one side and numbers to other
anonymous
  • anonymous
you should know this, if ur getting those questions for homework/revising..it pretty much basic algebra
anonymous
  • anonymous
yea
anonymous
  • anonymous
can u please solve it for me please im beggin you

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