|
lee25
Extremely EHEALTHy
Joined: 30 Dec 2003
Posts: 1018
Location: new york
|
I Need Math Help Too!
Posted: 09-14-04 13:07pm
|
|
|
|
I need help with word problems. I could
do the math but I don't know how to put it
into an equation.
1. A rectangle is twice as long as it is
wide. The perimeter is 6 feet. Find
the dimensions.
3. A square has a perimeter os 28 feet.
Findthe length of each side.
5. A triangle has a perimeter of 23
inches. The medium side is 3 inches more
than the shortest side, and the longest
side is twice the shortest side. Find
the shortest side.
7. The length of a triangle is 3 meters
less than twice the width. The peremeter
is 20 feet. Find the dimensions.
9. A livestock pen is built in the shape
of a rectangle that is twice as long as it
is wide. The perimeter is 48 feet. If
the material used to build the pen is
$1.75 per foot for the longer sides and
$2.25 per foot for the shorter sides (the
shorter sides have gates, which increase
the cost per foo 0, find the cost to build
the pen.
All I need to know is how you write them
as equations.
Please help, it's for this afternoon.
Brenda
|
|
|
|
|
 |
|
babyrae
Extremely EHEALTHy
Joined: 19 Jan 2004
Posts: 2957
Location: Manitoba, Canada
|
Posted: 09-14-04 13:59pm
|
|
|
|
|
Shute I had really high marks in math, but
when it came to word problems or
design/3d, I always screw up... What
about sparknotes or some university site??
My dads a math teacher for highschool
(grades 9-12), and took 4 years of math at
university.. So mybe when I go to my
parents later I could show him the
problems and see what he can do.
Shauna
|
|
|
|
|
|
|
lee25
Extremely EHEALTHy
Joined: 30 Dec 2003
Posts: 1018
Location: new york
|
Posted: 09-14-04 14:10pm
|
|
|
|
|
Thanks for trying, but I kind of needed it
by 400p.M
brends
|
|
|
|
|
|
|
Michelle1337
Extremely EHEALTHy
Joined: 04 Aug 2004
Posts: 1739
Location: Houston, Texas
|
Posted: 09-14-04 14:34pm
|
|
|
|
|
1. 2x+x=6 (not sure though)
3.28/4 = x
4x=28 (thanks lauren  )
5. 2x+x+3+x=23
4x+3=23
4x=20
x=5
then the medium side is 8 and the long
side is 10
7.
2x-3+2x-3+x=20
5x-6=20
x=5.2
which means the long sides = 7.4
7.4+7.4+5.2=20
9. (props go to lauren for this one)
2x+2x+x+x=48
6x=48
x=8
1.75(32)+2.25(16)
|
|
|
|
|
|
|
lauren22
Active User, Really EHEALTHy
Joined: 24 Jun 2004
Posts: 647
Location: Alabama
|
Posted: 09-14-04 15:06pm
|
|
|
|
|
Michelle and I make a pretty good team!
Haha
|
|
|
|
|
|
|
Michelle1337
Extremely EHEALTHy
Joined: 04 Aug 2004
Posts: 1739
Location: Houston, Texas
|
|
|
|
|
|
|
TQuartz490
Experienced User , Rather EHEALTHy
Joined: 12 Jul 2004
Posts: 444
Location: New York City
|
Posted: 09-14-04 16:16pm
|
|
|
|
|
5. 3 + 4s = 23
~jolieska~
|
|
|
|
|
|
|
Michelle1337
Extremely EHEALTHy
Joined: 04 Aug 2004
Posts: 1739
Location: Houston, Texas
|
Posted: 09-14-04 19:15pm
|
|
|
|
|
Jsut a question...But how did you get
that?
|
|
|
|
|
|
|
TQuartz490
Experienced User , Rather EHEALTHy
Joined: 12 Jul 2004
Posts: 444
Location: New York City
|
Posted: 09-14-04 20:50pm
|
|
|
|
|
What? If you are talking about my
answer.
Here is the problem ....
A triangle has a perimeter of 23 inches.
The medium side is 3 inches more than the
shortest side, and the longest side is
twice the shortest side. Find the
shortest side.
3 + 4s = 23 is the obvious formula.
Solution.....
Perimeter = 23
medium side = m
shortest side = s
longest side = l
m = 3 + s
shortest side = s
longest side = 2s
3 + s + s + 2s + = 3 + 4s + 23
3 + 4s = 23
-3 -3
4s = 20
___ ___
4s 4s (which is the same as dividing
4s into 20)
s = 5.
Medium side = 8
shortest side = 5
longest side = 10
there u go hunnie..Simple math..Lol..
~jolieska~
|
|
|
|
|
|
|
Michelle1337
Extremely EHEALTHy
Joined: 04 Aug 2004
Posts: 1739
Location: Houston, Texas
|
Posted: 09-14-04 20:51pm
|
|
|
|
|
Lol sorry I read that wrong..I have the
same thing up above...I just used x -
sorry girl. I just got confused.
|
|
|
|
|
|
|
TQuartz490
Experienced User , Rather EHEALTHy
Joined: 12 Jul 2004
Posts: 444
Location: New York City
|
Posted: 09-14-04 20:54pm
|
|
|
|
|
Oh ok, no prob.
~jolieska~
|
|
|
|
|
|
|
lee25
Extremely EHEALTHy
Joined: 30 Dec 2003
Posts: 1018
Location: new york
|
Posted: 09-15-04 12:09pm
|
|
|
|
|
I want to thank you guys, I spoke to my
teacher last night and gave me another
chance to work on those problems, since I
show the the other 50 problems and I did
all of those. I really appreciate the
help.
Brenda
|
|
|
|
|
