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Distributive-associative-commutative-properties/516075: 5(x-7)-(2x-9)
1 solutions

Answer 344236 by rfer(12647) About Me  on 2011-10-16 20:28:36 (Show Source):
You can put this solution on YOUR website!
5x-35-2x+9
3x-26


Linear-equations/516083: Determine if (-5/2,1) is a solution to -2x + 3y = 2 Please show all work
1 solutions

Answer 344234 by rfer(12647) About Me  on 2011-10-16 20:26:11 (Show Source):
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-2*1+3*-5/2=
-2+-7.5=-7.5
no solution


Numeric_Fractions/515941: how do you solve 5/2 divide by -3/4
1 solutions

Answer 344210 by rfer(12647) About Me  on 2011-10-16 17:00:29 (Show Source):
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(5/2)/(-3/4)
invert and multiply
5/2*-4/3=-20/6=- 3 1/3


Proportions/515925: Choose the best estimate for the following temperatures.
a. A good day to go skiing:-5 C, 15 C, or 35 C?
b. Treat yourself for a fever: 29 C, 39 C, or 99 C?
1 solutions

Answer 344209 by rfer(12647) About Me  on 2011-10-16 16:58:49 (Show Source):
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a) -15C
b) 39C


Proportions/515929: Identify the following amounts.
a. "Decidollar"
b. Centidollar"
c. Dekadollar"
d. Kilodollar"
1 solutions

Answer 344207 by rfer(12647) About Me  on 2011-10-16 16:57:09 (Show Source):
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a)=$0.10
b)=$0.01
c)=$10.00
d)=$1000.00


Money_Word_Problems/515866: jenny invests £3500 at 5% interest per year
what will she have at the end of 2 years, 5 years,8 years and 9 years?
1 solutions

Answer 344205 by rfer(12647) About Me  on 2011-10-16 16:47:11 (Show Source):
You can put this solution on YOUR website!
simple interest
I=Prt
I=3500*0.05*2
I=350
3500+350=3850
---------------
compounded annually
A=P(1+0.05)^2*1
A=3500*1.05^2
A=3858.75
-------
you do the others.
I gave you both because you did not say which one.


Equations/515872: -1/7a = 5
1 solutions

Answer 344204 by rfer(12647) About Me  on 2011-10-16 16:40:26 (Show Source):
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a=5/-1/7
a=5*-7/1
a=-35


Proportions/515922: What temperature is numerically the same in degrees Celsius and degrees Fahrenheit?
1 solutions

Answer 344203 by rfer(12647) About Me  on 2011-10-16 16:39:04 (Show Source):


Inequalities/515914: FOUR MORE THEN TWICE A NUMBER IS GREATER THEN TWO-THIRDS OF THE NUMBER

1 solutions

Answer 344202 by rfer(12647) About Me  on 2011-10-16 16:37:29 (Show Source):
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2x+4 > 2/3x
2x-2/3x > -4
6/3x-2/3x > -4
4/3x > -4
x > -4/(4/3)
x > -4*3/4
x > -12/4
x > -3


Linear-equations/515888: What does y= in the slope intercept form of the linear equation containing the given pair of points (-1,-3) and (-9,-5)
1 solutions

Answer 344201 by rfer(12647) About Me  on 2011-10-16 16:34:11 (Show Source):
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y=mx+b
Slope
m=(-5--3)/(-9--1)
m=-2/-8
m=1/4
-------------
-5=1/4*-9+b
-5=-9/4+b
b=9/4-5/1
b=9/4-20/4
b=-11/4
b=-2 3/4
-----------
y=1/4x-2 3/4


Money_Word_Problems/515896: Calculate the simple interest on $13500.00 for 25 months at 4% interest
1 solutions

Answer 344200 by rfer(12647) About Me  on 2011-10-16 16:29:24 (Show Source):
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I=Prt
I=13500*0.04*2.083
I=$1,124.80


Linear_Algebra/515376: P=4s for s
1 solutions

Answer 343947 by rfer(12647) About Me  on 2011-10-15 13:45:02 (Show Source):


Graphs/515207: it said find an equation of the line having the given slope and containing the given point

m=4/5,(4,-6)y=
1 solutions

Answer 343792 by rfer(12647) About Me  on 2011-10-14 20:08:05 (Show Source):
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y=mx+b
-6=4/5*4+b
-6=20/4+b
-6-5=b
b=-11
--------------
y=4/5x-11


Numbers_Word_Problems/515121: 8 times the difference of 8 and a number equals 136

1 solutions

Answer 343778 by rfer(12647) About Me  on 2011-10-14 18:35:40 (Show Source):
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8(8-x)=136
64-8x=136
-8x=136-64
-8x=72
x=72/-8
x=-9


Numeric_Fractions/515127: what is the answer to "5+4n=29"?
1 solutions

Answer 343777 by rfer(12647) About Me  on 2011-10-14 18:32:49 (Show Source):
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4n=29-5
4n=24
n=24/4
n=6


Geometric_formulas/515170: what is the equation for the line that passes through points (-1,-4) and (1,4)?
1 solutions

Answer 343774 by rfer(12647) About Me  on 2011-10-14 18:30:26 (Show Source):
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slope
m=(4--4)/(1--1)
m=8/2
m=4
--------------
y=mx+b
4=4*1+b
4=4+b
b=4-4
b=0
----------
y=4x
with the y intercept at the origin.


Linear-systems/515134: 9x + 1/9 = x/2 +2
1 solutions

Answer 343773 by rfer(12647) About Me  on 2011-10-14 18:23:35 (Show Source):
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(9x+1/9)-2=x/2
(9x-17/9)/2=x
4.5x-(17/9*1/2)=x
4.5x-17/18=x
3.5x=17/18
x=(17/18)(1/3.5)
x=17/63


expressions/515143: 0.3x + 0.3 (x+10) = 300
1 solutions

Answer 343771 by rfer(12647) About Me  on 2011-10-14 18:18:46 (Show Source):
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0.3x+0.3x+3=300
0.6x=297
x=297/0.6
x=495


Triangles/515153: I have a right triangle labled mno with a base as twice as long as the height. Height is equal to 6 and labled mn. The hypotenus is the square root of 136. Find the measure of side no?
1 solutions

Answer 343769 by rfer(12647) About Me  on 2011-10-14 18:16:02 (Show Source):
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136-(6)^2=100
sq rt 100=10
I don't totally understand the given information, because if the base is twice the heigth it should be 12, but in doing the calculations it comes out to be 10?


Numbers_Word_Problems/515074: Four less than twice a number is 48. Find the number
1 solutions

Answer 343685 by rfer(12647) About Me  on 2011-10-14 13:04:27 (Show Source):
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2x-4=48
2x=52
x=26


Linear-equations/515053: Find the slope, it is defined of each line. If undefined, state this.
(-3,2) (3,4)
I graphed this, but do not know what ordered pair is in between
1 solutions

Answer 343683 by rfer(12647) About Me  on 2011-10-14 13:03:17 (Show Source):
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slope
m=(4-2)/(3--3)
m=2/6
m=1/3


expressions/514784: 18=3y
1 solutions

Answer 343569 by rfer(12647) About Me  on 2011-10-13 20:43:18 (Show Source):


Travel_Word_Problems/514782: If a car is going 65 miles an hour how long does it take to go 25 miles
1 solutions

Answer 343568 by rfer(12647) About Me  on 2011-10-13 20:42:46 (Show Source):
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25/65=0.385 hrs=23 minutes


Mixture_Word_Problems/514707: If 3/4 is added to three times a number, the result is 1/2 subtracted from twice the number. Find the number.
1 solutions

Answer 343567 by rfer(12647) About Me  on 2011-10-13 20:41:37 (Show Source):
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3x+3/4=2x-1/2
x=-1/2-3/4
x=-2/4-3/4
x=-5/4
x=-1 1/4


Percentage-and-ratio-word-problems/514763: what is n x 2.25 = 90?
1 solutions

Answer 343562 by rfer(12647) About Me  on 2011-10-13 20:38:22 (Show Source):
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n=90/2.25
n=40


Numeric_Fractions/514614: factor if possibal
5zto the second power + 2z
1 solutions

Answer 343488 by rfer(12647) About Me  on 2011-10-13 17:24:17 (Show Source):


Travel_Word_Problems/514564: A woman lives 3060 miles away and her flight will take 5 hours. How fast is the plane going?
1 solutions

Answer 343487 by rfer(12647) About Me  on 2011-10-13 17:23:11 (Show Source):
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3060/5=612 mph


Numbers_Word_Problems/514570: the sum of three consecutive odd integers is 213, what are the integers
1 solutions

Answer 343486 by rfer(12647) About Me  on 2011-10-13 17:21:35 (Show Source):
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x+x+2+x+4=213
3x=207
x=207/3
x=69
x+2=71
x+4=73


Sequences-and-series/514575: Six times a number equals the sum of that number and negative 20. What is the number?
1 solutions

Answer 343483 by rfer(12647) About Me  on 2011-10-13 17:18:58 (Show Source):
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6x=x-20
5x=-20
x=-20/5
x=-4


decimal-numbers/514588: how to divide 84.48 by .88?
1 solutions

Answer 343482 by rfer(12647) About Me  on 2011-10-13 17:16:45 (Show Source):
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84.48/0.88=96
What this question is saying is 84.48 is 88% of what number.


Rectangles/514590: The perimeter, p, of a rectangular field can be found using the formula
p = 2l + 2w
where l is the length of the field and w is the width. Which equation could be used to solve for l
1 solutions

Answer 343481 by rfer(12647) About Me  on 2011-10-13 17:13:43 (Show Source):