Question

Can I get some help?

Answer 1

with what?

Answer 2

Find the perimeter of triangle CDE. Round to the nearest tenth.

90.0
18.0
14.3
10.5

Answer 3

uhh, sorry but I cannot help with you with that, but best of luck finding someone who can

Answer 4

can someone please help mee!!?

Answer 5

Do you know the distance formula?

Answer 6

No .

Answer 7

The distance formula is the square root of (x2 - x1)^2 + (y2-y1)^2
You have to make this calculation for all three of these lines. I'll help you with the first one

Answer 8

whats the answeeerrr ?

Answer 9

Lets take the top left line on your graph, CD. The point at C is (-3,1) and D is (1,4)
So plug these in for your formula above and you have
(1 - -3)^2 + (4 - 1)^2
= 4^2 + 3^2
=16+9
=25
sqrt(25) = 5
So your line CD = 5

Answer 10

now you have to do this for the other two lines, and to find the perimeter you just add your 3 answers together

Answer 11

This link will teach more about the distance formula
http://www.purplemath.com/modules/distform.htm

Answer 12

is the answer 18.0?

Answer 13

I dont know because it will take me a couple of minutes to do the other two just follow what I have done and if the other two lines add to 13, then add the line I did which is 5 and that means you would have 18

Answer 14

But from the looks of the picture and the answer I got for the first line, 18 is the only answer that makes sense because the other two lines look slight bigger than the 5 that we found, 90 is way to big and 10 is way to small. And it doesn't look like its 14.5 either.

Answer 15

still need help?