Question

Can someone please help me?

Answer 1

Find the perimeter of the rectangle in simplest form

Answer 2

i did it but i keep getting the answer \[8\sqrt{6}+12\] which isnt right =p

Answer 3

no puedo ayudar ahora lo siento

Answer 4

Do you know the perimeter formula? Basically you add up all sides.

Answer 5

i know that but im having trouble with the radicals -_-

Answer 6

np You basically have:

4 + sqrt(6) + 4 + sqrt(6) + 2sqrt(6) + 2sqrt(6)

So, how many "sqrt(6)'s" do you have?

Answer 7

4

Answer 8

The first appearance in the above equation of sqrt(6) has no multiplier in foront of it, so that is an understood coefficient of "1". Same for the next one. For the next 2 appearances of sqrt(6), each has a coefficient of "2". These are coefficients. What do you have if you add up all the coefficients?

Answer 9

9

Answer 10

or is it 13?

Answer 11

1 + 1 + 2 + 2 = ?

Answer 12

im so confused where did that come from?

Answer 13

Just looking at the sqrt(6) terms:

sqrt(6) + sqrt(6) + (2)(sqrt(6)) + (2)(sqrt(6)) =

(1 + 1 + 2 + 2)(sqrt(6))

Add up the first parentheses only

Answer 14

6

Answer 15

Now the key to this problem is how and why to do that distribution I di for you above. "sqrt(6)" is like "x" in that it can take a coefficient. So, that is a portion of your answer, and then you have to add to that:

4 + 4

but you CANNOT combine that with sqrt96). Your answer will be left as:

"a number" + "another number" times sqrt(6)

Answer 16

So,

"4 + 4" + 6(sqrt(6))

And then just add the 4 + 4 to get -> you get the idea by now I'm sure.

Answer 17

So, write something, see what you get.

Answer 18

hey, @skullpatrol , thx for the recognition!

Answer 19

im sorry you are not making a lot of sense..i dont understand what equation am i working with?

Answer 20

"4 + 4" + 6(sqrt(6))

Can you add 4 + 4?

What does 4 + 4 equal?

Answer 21

in my school it says for me to do this \[2\sqrt{6} (4+\sqrt{6})\]

Answer 22

ofcourse i can add 4+4 im not an idiot i just have earned to do it differently by distributing it that way^

Answer 23

You're not looking at the right directions for the right problem. This is not a question about the area. Your question is asking for the perimeter.

Answer 24

Since your question is about perimeter, you are being asked to add up the measure of all four sides. You have to start with an understanding of the problem at hand. You are looking at a formula for a different type of problem. I ask you: do you want the perimeter or the area?

Answer 25

so id do this? \[2(4+\sqrt{6}) + 2(2\sqrt{6})\]

Answer 26

Once more:

"4 + 4" + 6(sqrt(6))

Add 4 + 4

Answer 27

i dontget why your adding 4+4

Answer 28

because ther is a "4" in the bottom side and the top side of your diagram.

Answer 29

i have not the slightest i dea what your talking about there is no '4'

Answer 30

4 + sqrt(6) + 4 + sqrt(6) + 2sqrt(6) + 2sqrt(6)

4 + 4 + sqrt(6) + sqrt(6) + 2sqrt(6) + 2sqrt(6)

(4 + 4) + [sqrt(6) + sqrt(6) + 2sqrt(6) + 2sqrt(6)]

8 + (1 + 1 + 2 + 2)(sqrt(6))

8 + 6[sqrt(6)]

You're now done.

Answer 31

thank you

Answer 32

Do you understand any of this?

Answer 33

more or less this just isnt the way i learned it

Answer 34

How did you get this
\[ 8\sqrt{6}+12 \]
?

Answer 35

ill show you one sec

Answer 36

If you figure out what you did wrong, it will make it easier to do it right next time.

Answer 37

Well, anyway, I did my best, and I think you did get some of it. Just keep in mind the difference between perimeter and area. I still think you are thinking area here because your math looks a little like it

Answer 38

@tcarroll010 great job of teaching :)

Answer 39

i kniow that i was solving for the area but im just confused how he gt it that way because i would have use\[2(4+\sqrt{6})+ 2(2+\sqrt{6})\] wouldnt i?

Answer 40

nks for the vote of confidence. I tried not to just put out an answer and guide. But everyone learns in a different way. Thanks to everyone here, too.

Answer 41

It all goes back to asking yourself if you want area or perimeter. That's your starting point because you questioning the problem. What is sought for?

Answer 42

If you want area, then you have to use:

L x W

Answer 43

i know im suppose to find the perimeter and i would use that formula but you didnt

Answer 44

yes, but I think you want
\[ 2(4+\sqrt{6})+ 2(2\sqrt{6})\]
right ? (the short leg is 2 sqrt(6) not 2+sqrt(6)

if you did it the long way, you could say add up each leg:
\[ (4+\sqrt{6})+ (2\sqrt{6})+ (4+\sqrt{6})+ (2\sqrt{6})\]

Answer 45

Because you asked for perimeter, I presented you with the perimeter formula, which is quite different. The perimeter is merely adding up the measure of all the sides.

Answer 46

i just wrote out taht formula phi!

Answer 47

i just wrote out taht formula phi!*** check it carefully
you wrote
\[ 2(4+\sqrt{6})+ 2(2+\sqrt{6}) \]
which is not quite right.

Answer 48

And that's ok, and it's basically the same as what I did: You did:

2L + 2W

And again, that's fine because:

2L + 2 W = L + L + W + W

Answer 49

You're only real error was confusing

2 + sqrt(6)

with:

2 x sqrt(6)

Answer 50

i doesnt matter anymore i have the answer... thank you for your help

Answer 51

knowing how to get the answer is what you are trying to learn.

Answer 52

if you have not learned how to do it, you still have more work to do.

Answer 53

Getting understanding is EVERYTHING. It does matter. Getting the right answer is nothing compared to understanding how one went wrong and then learning. That's the real learning.

Answer 54

yes and im sorry t say this but your explanations dont make a whole lot of sense

Answer 55

Well, everyone learns differently and I'm sorry that I was not able to help you then.

Answer 56

you did but its just confusing to me how you did it

Answer 57

Then, a good way to go at Openstudy is to gravitate to the tutors who can help you the way you can learn from them. For my part, I'll continue my teaching style, because that's all I know, but I'll have to stick with helping those who gravitate to that type of style. I certainly don't want to confuse you. Maybe other tutors than me should help you in the future.

Answer 58

so finish up, way up top you said

so id do this?
\[ 2(4+\sqrt{6}) + 2(2\sqrt{6}) \]
and the answer is yes. that is the perimeter. the rest of the job is to simplify it.

first, distribute the 2 (multiply 2 times everything in side the parens

\[ 2\cdot 4+2 \sqrt{6} + 2(2\sqrt{6}) \]
the
\[ 2(2\sqrt{6}) \text { means } 2 \cdot 2 \cdot \sqrt{6}= 4 \sqrt{6}\]

Answer 59

i understand wha6 phi said

Answer 60

so you have
\[ 2\cdot 4 + 2 \sqrt{6}+4 \sqrt{6} \]
the 2*4 is 8, so we have
\[ 8 + 2 \sqrt{6}+4 \sqrt{6} \]

Answer 61

8+6r6

Answer 62

now the last part we have 2 times ugly number plus 4 more ugly numbers, or 6 ugly numbers all together (that is if you think sqrt(6) is ugly)
final answer
is \( 8 + 6 \sqrt{6} \)

Answer 63

thank you