Question

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.

Answer 1

Do you have any ideas on how to go about solving this?

Answer 2

Well, not really. I mean, I have some equations down, but I'm not sure if they are right.

a = 2x

b= x/2

c= x + 1

Answer 3

A + B + C = P (Perimeter)
Give me a minute, trying to remember triangles xD

Answer 4

Okay! Thank you!

Answer 5

A = 2b
C = a + 1
This sound right?

Answer 6

Yeah, that's what I have.

Answer 7

So C = 2b + 1
2b + 1 = 76

Answer 8

Try solving that.

Answer 9

b = 37.5

Answer 10

o.o wait.

Answer 11

xD okie

Answer 12

Okay so I tried it a different way. I kept the 37.5 and divided it by 2 again, because it's x/2.
That gave me 18.75 and I added 1 to it.
So I got 37.5, 18.75, and 19.75 which equals 76, but I'm not entirely sure that's 100% correct.

Answer 13

Umm, looking at the problem again now, C is a + 1, not 2b + 1--

orz sorry

Answer 14

I just substituted the A for 2b. ^^"

Answer 15

oh
oh omg sorry

Answer 16

Aw, I gotta go. I have soccer practice. If you're still around, I'll try to help out later! >.<

Answer 17

Oh, have fun haha! Thank you for helping! <3

Answer 18

On my dad's phone atm, but I just got the answer! A is 30, B is 15, and C is 31 ^-^
Thanks for being so patient with me.

Answer 19

Thank you again for taking the time to help me <3