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Human-and-algebraic-language/455688: A farmer wants to fence in three sides of a rectangular field with 1,000 feet of fencing. The other side of the rectangle will be the river. If the enclosed area is to be maximized, find the dimensions of the field.
1 solutions

Answer 312836 by rfer(12730) About Me  on 2011-05-30 21:15:47 (Show Source):
You can put this solution on YOUR website!
1000/3=333.33 ft each side for max area


Rectangles/455691: i have a rectangle. how does it relate to the golden ratio. it is 32 by 47 inches
1 solutions

Answer 312835 by rfer(12730) About Me  on 2011-05-30 21:14:07 (Show Source):
You can put this solution on YOUR website!
32/1=x/1.618
x=51.78
The proportions do not fit the golden ratio
as shown above.


Money_Word_Problems/455654: I need help solving this word problem. I have spent the last half an hour trying out different things and cannot get the math right. Please help.
Four hundred people attended a recent concert. Admission was $10 for each adult and $5 for each child. Ticket receipts totaled $3250. How many children and how many adults attended the concert?
All I have is:
People = 400
Adult = $10
Child = $5
Total = $3250.
1 solutions

Answer 312829 by rfer(12730) About Me  on 2011-05-30 20:53:13 (Show Source):
You can put this solution on YOUR website!
a+c=400 a=400-c
10a+5c=3250
10(400-c)+5c=3250
4000-10c+5c=3250
-5c=-750
c=150 children
400-150=250 adults
-------------------
250*10=$2500
150*5=$750
Total=$3250


Equations/455651: can you help me solve using addition and multiplication principles
2/3 _ x/5 < 4/15
1 solutions

Answer 312826 by rfer(12730) About Me  on 2011-05-30 20:47:24 (Show Source):
You can put this solution on YOUR website!
-x/5 < 4/15-10/15
-x/5 < -6/15
-x < -5/15*5/1
-x < -25/15
x > 25/15
x > 1 2/3


Travel_Word_Problems/455639: 2 people are traveling toward eachother and the distance apart is 278 miles, 1 person goes 50 mph and the other 60 mph. how much time till they meet eachother?
1 solutions

Answer 312824 by rfer(12730) About Me  on 2011-05-30 20:43:40 (Show Source):
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approach speed 110
278/110=2.53 hrs=2 hrs 32 min


Evaluation_Word_Problems/455655: solve. 3x + (-4) = 26
1 solutions

Answer 312821 by rfer(12730) About Me  on 2011-05-30 20:36:02 (Show Source):
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3x=26+4
3x=30
x=10


Angles/455668: An angle is 50°. Which angle has the largest measurement?

A. an angle congruent to the original angle
B. the complement of the original angle
C. the supplement of the original angle
D. original angle
1 solutions

Answer 312815 by rfer(12730) About Me  on 2011-05-30 20:30:56 (Show Source):
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C) 180-50=130 degrees


Linear-equations/455629: The average salary for computer programmer is 7740 less than twice the average salary for carpenters. Combined, their average salaries are 99,000 . Determine the average salary for each of these jobs
1 solutions

Answer 312793 by rfer(12730) About Me  on 2011-05-30 18:14:11 (Show Source):
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(99000+7740)/3=$35,580 Carpenter
(2*35580)-7740=$63,420 Programer


Volume/455607: a barrel has a radious of 1.5 ft and a height of 4 ft. calculate the volume
1 solutions

Answer 312790 by rfer(12730) About Me  on 2011-05-30 18:05:30 (Show Source):
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V=Pir^2h
V=3.14*1.5^2*4
V=28.26 cu ft


Probability-and-statistics/455617: In a shipment of 40 Stoves, 2 R defected. what percent is defected?
1 solutions

Answer 312788 by rfer(12730) About Me  on 2011-05-30 18:02:57 (Show Source):


Quadratic_Equations/455605: what is the answer to 6xsquared-24=0
1 solutions

Answer 312777 by rfer(12730) About Me  on 2011-05-30 17:17:27 (Show Source):
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6x^2-24=0
6x^2=24
x^2=4
x=2


Miscellaneous_Word_Problems/455585: 1. Each year, I plant a fruit/vegetable garden in the spring. I grow a variety of things, but my BIG plantings are of tomatoes and peppers. However, getting my seeds to sprout is not as easy as you’d think….
A. This year, I seeded both peppers and tomatoes, using a total of 120 seeds. Write an equation to show this.

B. I sowed nine times as many tomato seeds as pepper seeds. Write an equation to show this.

C. How many tomato seeds did I plant?

D. How many pepper seeds did I plant?

1 solutions

Answer 312776 by rfer(12730) About Me  on 2011-05-30 17:16:19 (Show Source):
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B) x+9x=120
10x=120
D)x=12 peppers
C)9x=108 toma6tos


Geometry_Word_Problems/455593: The length of a rectangle is six times its width.
If the area of the rectangle is 294in , find its perimeter
1 solutions

Answer 312775 by rfer(12730) About Me  on 2011-05-30 17:12:46 (Show Source):
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6x^2=294
x^2=49
x=7
--------------
2*7+2*42=
14+84=98 in


Travel_Word_Problems/455604: Car travels 60mph. How far will it travel in 2 1/2 hours
1 solutions

Answer 312774 by rfer(12730) About Me  on 2011-05-30 17:10:10 (Show Source):
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D=rt
D=60*2.5
D=150 miles


Complex_Numbers/455602: solve (x-5)2/3+3(x-5)1/3-4=0

1 solutions

Answer 312773 by rfer(12730) About Me  on 2011-05-30 17:09:17 (Show Source):
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2/3x-10/3+x-5-4=0
5/3x=37/3
x=(37/3)/(5/3)
x=37/3*3/5
x=22 1/5


Inequalities/455600: the answerto -6x/5<-3x+2
1 solutions

Answer 312765 by rfer(12730) About Me  on 2011-05-30 16:50:02 (Show Source):
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-6x<-15x+10
9x<10
x<10/9
x<1 1/9


Length-and-distance/455596: Given the slope of a line is -3 and passes through the point (1,4), find the equation of the line in slope-intercept form?
- What is the y -intercept?
- What is the x- intercept?
1 solutions

Answer 312764 by rfer(12730) About Me  on 2011-05-30 16:47:44 (Show Source):
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4=-3*1+b
b=7
y=-3x+7
---------------
x int=(2 1/3,0)
y int=(0,7)


Linear-equations/455579: How do I find the slope of a line when given an equation, such as, y=-3x-4?
1 solutions

Answer 312752 by rfer(12730) About Me  on 2011-05-30 15:50:16 (Show Source):
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y=mx+b
m=slope
m=-3


Linear-equations/455581: How do I slove an inequality, such as, -14<7(4-6p)? Also, how do I graph its solution?
1 solutions

Answer 312750 by rfer(12730) About Me  on 2011-05-30 15:48:56 (Show Source):
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-14<28-42p
-42<-42p
1>p


Angles/455490: what is the supplement of an angle with measure 23 degrees
1 solutions

Answer 312712 by rfer(12730) About Me  on 2011-05-30 13:10:18 (Show Source):
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180-23=157 degrees


Probability-and-statistics/455528: Of 31 college sophomores at Crocodile Community College, 15 preferred pepperoni pizza, 11 preferred supreme, and 5 preferred cheese. If we picked a college sophomore at Crocodile Community College at random, what is the probability that he or she would prefer pepperoni? Give solution exactly in reduced fraction form.

1 solutions

Answer 312711 by rfer(12730) About Me  on 2011-05-30 13:08:16 (Show Source):


Polynomials-and-rational-expressions/455375: Evaluate the polynomial for x=-4
2x^2-3x+3
1 solutions

Answer 312664 by rfer(12730) About Me  on 2011-05-30 00:14:45 (Show Source):
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2*-4^2-3*-4+3
32+12+3=47


Graphs/455369: Write the slope intercept equation for the line containing the given pair of points (-3,5) and (-1,-3), show all work.
1 solutions

Answer 312663 by rfer(12730) About Me  on 2011-05-30 00:11:58 (Show Source):
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m=(-3-5)/(-1--3)
m=-8/2
m=-4
------------
y=mx+b
-3=-4*-1+b
-3=4+b
b=-7
-----------
y=-4x-7


Average/455379: I need help with this, please. Find the equation of the line having the given slope and containing the given point. Express your answer in the form x=a,y=b or y=mx + b
m= -2, (9,0)
1 solutions

Answer 312662 by rfer(12730) About Me  on 2011-05-30 00:08:56 (Show Source):
You can put this solution on YOUR website!
y=mx+b
0=-2*9+b
b=18
-----------
y=-2x+18


Graphs/455396: determine slope of the line (-4, -2) and (-1,-1)
1 solutions

Answer 312661 by rfer(12730) About Me  on 2011-05-30 00:05:45 (Show Source):
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m=(-1--2)/(-1--4)
m=1/3


Volume/455350: Find the volume of a cone with radius 9m and height 6m. Use 3.14
1 solutions

Answer 312629 by rfer(12730) About Me  on 2011-05-29 20:24:47 (Show Source):
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V=(3.14*9^2*6)/3
V=1526/3=508.7 cu m


test/455349: A number decreased by 6 is 7. Find the number

1 solutions

Answer 312626 by rfer(12730) About Me  on 2011-05-29 19:56:27 (Show Source):


Finance/455329: This is my question:
At an auction, a lucky wealthy collector paid $7,000,000 for three paintings: a Monet, a Picasso, and a van Gogh. The Monet cost $800,000 more than the Picasso. The price of the van Gogh was $200,000 more than twice the price of the Monet. What was the price of each painting?
Thank you for your assistance.
1 solutions

Answer 312623 by rfer(12730) About Me  on 2011-05-29 19:41:37 (Show Source):
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x+(x+800)+2(x+800)+200=7000
x+x+800+2x+1600+200=7000
4x=7000-2600
4x=4400
x=1,100,000 P
x+800=1,900,000 M
2*1900000+200000=4,000,000 V


Mixture_Word_Problems/455330: Find an equation of variation in which y varies directly as x and the following is true. y=400 when x=60
a. x= 20/17y
b. y= 3/20x
c. y= 20/3x
d. x= 340y

1 solutions

Answer 312620 by rfer(12730) About Me  on 2011-05-29 19:29:35 (Show Source):


Linear-equations/455340: -3x+8+10+-6
1 solutions

Answer 312618 by rfer(12730) About Me  on 2011-05-29 19:27:09 (Show Source):


Linear-equations/455341: -3x+8+10+-6x
1 solutions

Answer 312617 by rfer(12730) About Me  on 2011-05-29 19:26:23 (Show Source):