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Numbers_Word_Problems/257861: The perimeter of a rectangular garden is 58 meters. Its length is 5 meters more than its width. Find the length and width of the garden.
The width of a flat screen is 4 times more than its height. If the perimeter of the flat screen is 120 cm, find the width and height of the screen.
1 solutions

Answer 189766 by rfer(12660) About Me  on 2010-01-17 23:54:19 (Show Source):
You can put this solution on YOUR website!
2x+2(x+5)=58
2x+2x+10=58
4x=48
x=12 m
x+5=17 m
-------------
2x+2(4x)=120
2x+8x=120
10x=120
x=12 cm
4x=48 cm


Travel_Word_Problems/257887: if i am travelling 20 km per hour, how far do i travel in ten seconds
1 solutions

Answer 189764 by rfer(12660) About Me  on 2010-01-17 23:49:41 (Show Source):
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20/360=x/10
200/360=0.56 km


Rectangles/257841: 2. Suppose that the length of a rectangle is three cm longer than twice the width and that the perimeter of the rectangle is 90 cm.
a) Set up an equation for the perimeter involving only W, the width of the rectangle.
Answer:
b) Solve this equation algebraically to find the length of the rectangle. Find the width as well.
Answer: Length ______, Width ______
Show your work here:

1 solutions

Answer 189745 by rfer(12660) About Me  on 2010-01-17 21:04:10 (Show Source):
You can put this solution on YOUR website!
p=2w+2(2w+3)
90=2w+4w+6
90=6w+6
84=6w
14=w
w=14 cm
2w+3=31 cm


Surface-area/257780: If the top of a coke can has a 7 cm diameter, what is the radius, circumfrence and area?

1 solutions

Answer 189742 by rfer(12660) About Me  on 2010-01-17 20:59:03 (Show Source):
You can put this solution on YOUR website!
r=.5d
r=3.5 cm
-----------
c=pi*d
c=7*3.1416
c=22 cm
--------------
a=pi*r^2
a=3.14*3.5^2
a=3.14*12.25
a=38.47 sq cm


Money_Word_Problems/257814: A certificate of deposit for one year pays $221 simple interest on a principal of $3400. What is the interest rate being paid on this deposit?
1 solutions

Answer 189739 by rfer(12660) About Me  on 2010-01-17 20:54:05 (Show Source):
You can put this solution on YOUR website!
i=Prt
r=i/Pt
r=221/3400*1
r=0.065 = 6.5%


Mixture_Word_Problems/257827: Two trains leave a train station at the same time. One travels east at 11 miles per hour. The other train travels west at 7 miles per hour. In how many hours will the two trains be 118.8 miles apart?
1 solutions

Answer 189737 by rfer(12660) About Me  on 2010-01-17 20:51:32 (Show Source):
You can put this solution on YOUR website!
moving apart at 18 mph
118.8/18=6.6 hrs or 6 hrs 36 min


Rectangles/257835: the perimeter of a rectangle is 136 inches. the length exceeds the width by 22 inches. find the length and the width?
1 solutions

Answer 189736 by rfer(12660) About Me  on 2010-01-17 20:48:24 (Show Source):
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2x+2(x+22)=136
2x+2x+44=136
4x=92
x=23 in
x+22=45 in


Matrices-and-determiminant/257777: Write an equation for the line. Use slope-intercept form, if possible.
Through (0, 2) m=1/2

1 solutions

Answer 189659 by rfer(12660) About Me  on 2010-01-17 17:04:04 (Show Source):
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y=mx+b
y=1/2x+2


Matrices-and-determiminant/257778: Find the slope of the line.
y=5/3x
1 solutions

Answer 189656 by rfer(12660) About Me  on 2010-01-17 17:02:43 (Show Source):
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the slope is 5/3


Probability-and-statistics/257774: Consider the experiment of selecting a card from an ordinary deck of 52 playing cards and determine the probability of a red 7 is drawn
1 solutions

Answer 189655 by rfer(12660) About Me  on 2010-01-17 17:02:00 (Show Source):


Numeric_Fractions/257771: how do you slove r+1/3=8/3
1 solutions

Answer 189654 by rfer(12660) About Me  on 2010-01-17 17:00:48 (Show Source):
You can put this solution on YOUR website!
r+1/3=8/3
r=8/3-1/3
r=7/3 or 2 1/3


Human-and-algebraic-language/257592: The final grade for a particular course is calculated by dividing total points earned by total points available. There are 120 points available in the first half of the course, and 140 points in the second half of the course. If a student earns 81% in the first half of the course, how many points must the student earn in the second half in order to earn an 80% B final grade?
1 solutions

Answer 189651 by rfer(12660) About Me  on 2010-01-17 16:59:15 (Show Source):
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total points=260
260*.8=208
must earn 208 total points
120*.81=97 points earned in first part.
208-97=111 points on second half


percentage/257590: they only give me 1,114,00 and say that its only 1 percent of the whole, and they ask if its 1 percent then how much of that percent would 10,000 be?
1 solutions

Answer 189644 by rfer(12660) About Me  on 2010-01-17 16:53:09 (Show Source):
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10000/1114000=.000897=.0897% of 1114000
I believe the way the problem is worded, the new whole becomes 1114000 for this calculation


Travel_Word_Problems/257761: A train travels at 120 km/h. estimate the distance it can travel in 7h 45min.

1 solutions

Answer 189640 by rfer(12660) About Me  on 2010-01-17 16:44:50 (Show Source):


Travel_Word_Problems/257762: A train travels at 120 km/h. estimate the distance it can travel in 7h 45min.

1 solutions

Answer 189639 by rfer(12660) About Me  on 2010-01-17 16:44:23 (Show Source):


Money_Word_Problems/257673: Compute the compounded quarterly interest earned over 2 years time on 200.00 deposited into an acount earning 4 percent annually
1 solutions

Answer 189637 by rfer(12660) About Me  on 2010-01-17 16:42:25 (Show Source):
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A=200(1+.04/4)^4*2
A=200(1.01)^8
A=200*1.0828567
A=216.57
interest earned= $16.57


Money_Word_Problems/257754: You want to have a $90,000 college fund in 11 years. How much will you have to deposit now under the scenario below. Assume that you make no deposits into the account after the initial deposit.
An APR of 5% compounded daily.
1 solutions

Answer 189635 by rfer(12660) About Me  on 2010-01-17 16:35:12 (Show Source):
You can put this solution on YOUR website!
P=A/(1+r/n)^nt
P=90000/(1+.000136986)^4015
P=90000/1.7331856
P=$51,927.50


Travel_Word_Problems/257757: A train travels at 120 km/h. estimate the distance it can travel in 7h 45min.

1 solutions

Answer 189633 by rfer(12660) About Me  on 2010-01-17 16:28:09 (Show Source):
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120*7.75=930 km


Expressions-with-variables/257676: what is a algebraic expression

1 solutions

Answer 189632 by rfer(12660) About Me  on 2010-01-17 16:26:32 (Show Source):
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something with no equal sign in it


Angles/257682: 5x+2y+2x-4x
1 solutions

Answer 189630 by rfer(12660) About Me  on 2010-01-17 16:23:45 (Show Source):


Money_Word_Problems/257689: You deposit $25,000 in an account to accrue interest for 40 years. the account pays 4% compunded anually. Assume that the income tax on the earned interest is 30%. Which of the following plans produces a larger balance after all income tax is paid?
(A) the income tax on the interest that is earned is paid in one lump sum at the end of 40 years.
or
(B)The income tax on the interest that is earned each year is paid at the end of each year.

i know i am supposed to use the A=P(1+r/n)^nt equation, but im not sure where to put the information.
please help. thank you.
1 solutions

Answer 189629 by rfer(12660) About Me  on 2010-01-17 16:21:15 (Show Source):
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A= future value
P=present value
r=interest rate
n= number of compounding periods per year
t=number of years
Does that help?


Geometry_Word_Problems/257691: a rectangle is 3 times as long as it is wide. the premiter is 60 cm. Find the length of the rectangle
1 solutions

Answer 189627 by rfer(12660) About Me  on 2010-01-17 16:17:52 (Show Source):
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2x+2(3x)=60
2x+6x=60
8x=60
x=7.5 cm
3x=22.5 cm


percentage/257698: A retail store has items such that they fall under the categories of clothes, housewares, jewelry, and other. . If the floor space allocated to housewares is 24,450 square feet with a 32.6%.What space is allocated to jewlery with a 18.4%.
1 solutions

Answer 189624 by rfer(12660) About Me  on 2010-01-17 16:14:51 (Show Source):
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24450/.326=75000 total space
75000(.184)=13800 sq ft to jewelry


Linear-equations/257740: How do I find the slope and y-intercept of:
-3x + y= -2
1 solutions

Answer 189621 by rfer(12660) About Me  on 2010-01-17 16:10:01 (Show Source):
You can put this solution on YOUR website!
-3x+y=-2
change to y=mx+b form
y=3x-2
m=slope=3/1
y int=(0,-2)


Money_Word_Problems/257741: suppose u start saving today for a $45000 down payment that you plan to make on a house in 5 years. Assume that you make no deposits into the account after the initial deposit. For the account described below, how much would you have to deposit now to reach for $45000 goal in 5 years.
an account with daily compounding and an APR of 4%

1 solutions

Answer 189619 by rfer(12660) About Me  on 2010-01-17 16:08:06 (Show Source):
You can put this solution on YOUR website!
P=A/(1+r/n)^nt
P=45000/(1+.04/365)^365*5
P=45000/(1.0001)^1825
P=45000/1.2
P=$37,500


Linear-equations/257743: how do i graph the slope and y intercept of X+5y=10
1 solutions

Answer 189617 by rfer(12660) About Me  on 2010-01-17 16:02:51 (Show Source):
You can put this solution on YOUR website!
x+5y=10
Change to y int form
y=mx+b
5y=-x+10
y=-x/5+2
(-1/5,2)
y int =(0,2)
m=slope=-1/5


Polygons/257571: I've done pretty good with ratios and proportions until I hit this one and I'm stumped. The question reads: A baseball players batting average is the ratio of number of hits to number of times at bat. A player has 10 hits out of 20 times at bat. How many consecutive times at bat must a hit be made to raise his average to .600?
I'm guessing that somehow I have to use his current average of .500 but I can't figure out how to set up the equation to get the .600.
Thanks for any help,
Laura
1 solutions

Answer 189481 by rfer(12660) About Me  on 2010-01-16 20:51:10 (Show Source):


Inequalities/257390: Can you please help me solve u/8=7/17 and rounnd it to the nearest tenth? Thank you!!
1 solutions

Answer 189479 by rfer(12660) About Me  on 2010-01-16 20:44:58 (Show Source):
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u/8=7/17
17u=7*8
17u=56
u=3.3


Finance/257407: a person will receive rs.5000six years from now.what is its present value at a compounded discount rate of 8%.
1 solutions

Answer 189476 by rfer(12660) About Me  on 2010-01-16 20:41:18 (Show Source):
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p=5000/(1+.08)^5
p=5000/1.469328
p=$3403


Money_Word_Problems/257500: Ralph Chase plans to sell a piece of property for $180,000. He wants the money to be paid off in two ways, a short-term note at 11% interest and a long-term note at 8% interest. Find the amount of each note if the total annual interest paid is $17,400.
1 solutions

Answer 189474 by rfer(12660) About Me  on 2010-01-16 20:29:55 (Show Source):
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.11x+.08(180000-x)=17400
.11x+14400-.08x=17400
.03x=3000
x=$100,000 at 11%
$80,000 at 8%


Exponents-negative-and-fractional/257568: I do not understand how to solve this problem :-12=5r+8. No matter how I try, I don't understand the concept. Can you help? muchie367@yahoo.com
1 solutions

Answer 189472 by rfer(12660) About Me  on 2010-01-16 20:22:44 (Show Source):
You can put this solution on YOUR website!
-12=5r+8
take -8 from both sides
-20=5r
divide both sides by 5
-4=r