Question

Hi All, I have been struggling with my first attempt at algebra and have done fine until now. We are doing Applications/Problem Solving of linear equations. My question is how to go about doing an application on a rectangle that gives the width as 44.6m and the Perimeter is 127m?

Answer 1

Use the perimeter formula,

Perimeter = 2(L+B)

insert the values and you are done!

Answer 2

44.6*2=89.6 then 127-89.6=37.4 and divide by 2 to give 18.7 per length side

Answer 3

Ok but I think it is 18.9?

Answer 4

you are right, sorry i was doing it all in my head :)

Answer 5

Thanks you guys you are really helpful though. I think I can figure how to compose the report itself if I can figure the darn equation structure.

Answer 6

Wow, can I borrow your head, LOL!!!

Answer 7

Haha, dont forget to charge rent @ncjohnson6943

Answer 8

haha it takes a lot of years (and a bachelors in mathematics) to do it all in your head. i may not wish all the math i have done upon my worst enemy :)

Answer 9

LOL;) Thank you so much, I will use your equation to figure the rest of the info the instructor wants. Nice to find this place and who knows, maybe I can help someone one day:) Denise

Answer 10

Thank you both, Saifoo and nc:)

Answer 11

No problemo.

Answer 12

p=2l+2w so the equation would be 127=2L+2(44.6) so the answer would be L=3.9

Answer 13

I get confused because how can the length be shorter than the width of the rectangle? If I have a width of 44.6m and the perimeter is 127m(I drew a rectangle to try and help me form my equation)than I see how we found the length with NC's figures but do you see what I am saying about the width being wider than the length? Maybe I have just lost my one, remaining marble:(

Answer 14

it just means it is wider than it is longer, length doesnt have to be the longest dimension.

Answer 15

Hmm, well that is important for me to learn;) Thank you MUCH!!!

Answer 16

that is a good question it is wierd

Answer 17

Ok, so P=2(L)+2(W), got it.

Answer 18

Yes, that is the correct formula.

Answer 19

Thanks you smartie pants;) I truly appreciate your time and patience with me, Denise

Answer 20

Is that 3.9 the right answer? I can't figure how she got that?

Answer 21

3.9 twice + 44.6 twice doesn't equal 127?

Answer 22

127=2(44.6+L)
127/2=44.6+L
63.5=44.6 +L
L=63.5-44.6=18.9

Answer 23

18.9+18.9+44.6+44.6=127

Answer 24

@nwcountry do you follow?

Answer 25

That was what I got, I mean I didn't have the equation written right but I figured the answer using logic. Yes, 18.9 is the length correct?

Answer 26

That 3.9 threw me though.

Answer 27

yes, babygirl81 was the one that got 3.9

Answer 28

Ok;) I will have to do a profile here and come back. What a neat site. I usually work alone because I can't find anyone at school that wants to study or practice Math ;)

Answer 29

She had the correct formula, but must slipped up on the calculation

Answer 30

I'm 59 and back in college, LOL!! But I love it and Math is my fave. I hated school when I was a kid, go figure;)

Answer 31

Welcome and enjoy.

Answer 32

Will do:) ttyl, Denise

Answer 33

73 here lol

Answer 34

Great! Nice to meet you Radar;) See you later, Denise

Answer 35

Ok, I figured out how to present the equation the way my instructor wants it. Thought I would share it with you guys. Feedback welcome. I couldn't have gotten this far without your help;) 2(44.6)+2(L)=127 Perimeter, 89.2 + 2(L)=127 P, then I need to subtract 89.2 from each side leaving 2L =37.8, then I have to divide each side by 2 and I get my L=18.9

I suppose there are lots of ways of doing equations but I started recognizing how he's taught us. Thanks again, now all I have to do is put in the wordy part of the Problem Solving/Application which I can handle that:) bye for now, denise

Answer 36

Is that math 117 or 116?

Answer 37

Math 60 it's called.

Answer 38

Introductory algebra! :D

Answer 39

Yes:)
The book is called Introductory & Intermediate Algebra Blitzer, heavier then my backpack, LOL!!!
It will take me through 2 or 3 more terms though, same book.

Answer 40

lol, it has 1000+ pages! D:

Answer 41

Yes, it does for sure;)

Answer 42

Fun fun fun, LOL

Answer 43

lol.

Answer 44

This is nuts, I have (x+4)(x+6) and I keep getting x^2+10x+24. But the answer is x^2+11.+30 in the book? This is a practice question since they have the answers to odd #'d problems but not the even ones. We have to turn in the even ones.

Answer 45

I have all my notes but he didn't do one like this in class:( I think he hates us, LOL!!!

Answer 46

I'll be back, I need nutrition, LOL!!!

Answer 47

Your answer is correct ma'am.

Answer 48

lol.

Answer 49

you're joking?

Answer 50

No, really.

Answer 51

I guess I better check the dang book answer again then.

Answer 52

OMG, LOL, I must have looked at the wrong answer in the back, LOL!! Somebody beam me up and take me back to whatever planet I came from, LOL!!

Answer 53

Thanks Saifoo, what a sweetie you are:) ttyl, Denise

Answer 54

LOLOL.
Welcome ma'am.

Answer 55

And thanks