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test/512687: (x)(x)(x3)
1 solutions

Answer 342700 by rfer(12657) About Me  on 2011-10-10 20:40:26 (Show Source):


test/512592: What is the sum of 10 consecutive odd integers if the median of these integers is 40?
---------------------
If a is three more than 1/3 of b, then what is b in terms of a?
Answer
a. 3(a - 3)
b. 3(a + 3)
c. 3a - 3
d. a - 9
e. a - 3
------------------------------------
If it takes 10 people 18 hours to do a certain job, how many hours would it take 15 people, working at the same rate, to do 2/3 of the same job?
Answer
a. 9
b. 10
c. 12
d. 8
e. 6
1 solutions

Answer 342681 by rfer(12657) About Me  on 2011-10-10 19:02:45 (Show Source):
You can put this solution on YOUR website!
#1)
a=1/3b+3
a-3=1/3b
b=(a-3)/(1/3)
b=(a-3)(3/1)
b=3(a-3)
-------------
#2)
10*18=x*15
180=15x
x=180/15
x=12hrs total
-----------------
12*2/3=24/3=8 hrs


Proportions/512625: solve this... r over 6 = 40 over 50
1 solutions

Answer 342678 by rfer(12657) About Me  on 2011-10-10 18:55:39 (Show Source):
You can put this solution on YOUR website!
I have shown you three, now you do this one.
Bob


Proportions/512623: solve this... k over 9 = 10 over 18
1 solutions

Answer 342676 by rfer(12657) About Me  on 2011-10-10 18:54:52 (Show Source):
You can put this solution on YOUR website!
k/9=10/18
18k=90
k=90/18
k=5


Proportions/512621: solve this... 5 over 8 = t over 24

1 solutions

Answer 342675 by rfer(12657) About Me  on 2011-10-10 18:53:41 (Show Source):
You can put this solution on YOUR website!
5/8=t/24
8t=24*5
8t=120
t=120/8
t=15


Problems-with-consecutive-odd-even-integers/512620: if x represents an odd number, how can you express the next consecutive odd number in terms of x?
1 solutions

Answer 342673 by rfer(12657) About Me  on 2011-10-10 18:52:24 (Show Source):


Equations/512607: 1/6(6-x)=27+2x
1 solutions

Answer 342672 by rfer(12657) About Me  on 2011-10-10 18:51:42 (Show Source):
You can put this solution on YOUR website!
1-1/6x=27+2x
-1/6x-2x=27-1
2 1/6x=26
x=26/(13/6)
x=26*6/13
x=2*6
x=12


Average/512610: 16%of what number is 24
1 solutions

Answer 342671 by rfer(12657) About Me  on 2011-10-10 18:48:25 (Show Source):


Proportions/512616: solve this proportion.. 16 over 7 = m over 21

1 solutions

Answer 342669 by rfer(12657) About Me  on 2011-10-10 18:46:37 (Show Source):
You can put this solution on YOUR website!
16/7=m/21
7m=21*16
7m=336
m=336/7
m=48


Linear-equations/512529: -5x=9-2x
1 solutions

Answer 342649 by rfer(12657) About Me  on 2011-10-10 17:00:20 (Show Source):
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-3x=9
x=9/-3
x=-3


Angles/512503: THE MEASURE OF AN ANGLE IS 28 DEGREES GREATER THAN IT'S COMPLEMENT. FIND THE MEASURE OF EACH ANGLE.
THE MEASURE OF AN ANGLE IS 21 DEGREES MORE THAN TWICE IT'S SUPPLEMENT. FIND THE MEASURE OF EACH ANGLE.
1 solutions

Answer 342648 by rfer(12657) About Me  on 2011-10-10 16:59:37 (Show Source):
You can put this solution on YOUR website!
x+x+28=90
2x=90-28
2x=62
x=31
x+28=59
-------------
x+2x+21=180
3x=180-21
3x=159
x=159/3
x=53
2x+21=127


Percentage-and-ratio-word-problems/512524: An aquarium holds 6 1/4 gallons of water. The level has dropped by 4/5, how much water should be added.
1 solutions

Answer 342647 by rfer(12657) About Me  on 2011-10-10 16:55:36 (Show Source):
You can put this solution on YOUR website!
6.25*0.80=5 gal
-------------
25/4*4/5=100/20=5 gal


Percentage-and-ratio-word-problems/512493: a computer with an original price of 1260 is on sale at 25% off
what is the discount?
what is the computer sale price
1 solutions

Answer 342645 by rfer(12657) About Me  on 2011-10-10 16:53:12 (Show Source):
You can put this solution on YOUR website!
1260*0.25=$315 discount
1260-315=$945 sale price


test/512497: Find the sum of 17 and 4 squared
1 solutions

Answer 342644 by rfer(12657) About Me  on 2011-10-10 16:50:56 (Show Source):


Money_Word_Problems/512512: An investment company pays 6% compounded semiannually. You want to have 24,000 in the future. How much should you deposit now to have that amount 5 years from now?
1 solutions

Answer 342643 by rfer(12657) About Me  on 2011-10-10 16:45:37 (Show Source):
You can put this solution on YOUR website!
24000=P(1+0.06/2)^2*5
24000=P(1.03)^10
24000=P(1.3439)
24000/1.3439=P
P=$17,858.47


Linear_Equations_And_Systems_Word_Problems/512513: a number increased by fifteen is equal to five-halves the number. find the number
1 solutions

Answer 342642 by rfer(12657) About Me  on 2011-10-10 16:41:35 (Show Source):
You can put this solution on YOUR website!
x+15=5/2x
x+15=2.5x
x-2.5x=-15
-1.5x=-15
x=-15/-1.5
x=+10


Numeric_Fractions/512101: 7/6 divide by 9 answer in simplest form
1 solutions

Answer 342561 by rfer(12657) About Me  on 2011-10-09 23:40:16 (Show Source):
You can put this solution on YOUR website!
(7/6)/9=
7/6*1/9=7/54


Polynomials-and-rational-expressions/512114: what is 15(10)to the o.7 power?
1 solutions

Answer 342559 by rfer(12657) About Me  on 2011-10-09 23:37:36 (Show Source):


Travel_Word_Problems/512126: I drove 280 miles in 6 hours what is this total in a fraction
1 solutions

Answer 342558 by rfer(12657) About Me  on 2011-10-09 23:34:37 (Show Source):


decimal-numbers/512136: The Directions are to write decimal as a fraction or mixed number in simplest form.
The problem is
-0.028
can you please help and solve this problem step by step so i can understand it better?
1 solutions

Answer 342556 by rfer(12657) About Me  on 2011-10-09 23:32:42 (Show Source):
You can put this solution on YOUR website!
-28/1000=-7/250


Mixture_Word_Problems/512150: An isosceles triangle has two sides of equal length. The length of one of the eqaul sides is 2 more than three times the length of the third side. If the perimeter is 46 m, find the length of each side.
I need to translate this sentence into an equation and then solve
1 solutions

Answer 342554 by rfer(12657) About Me  on 2011-10-09 23:28:59 (Show Source):
You can put this solution on YOUR website!
2(3x+2)+x=46
6x+4+x=46
7x=42
x=6 one side
3x+2=20 two sides


Geometry_Word_Problems/512160: you have 80 ft of fencing to enclose a rectangular yard. The yard is 10 ft wide by 30 ft long. What is the area of the rectangular yard?
1 solutions

Answer 342553 by rfer(12657) About Me  on 2011-10-09 23:25:01 (Show Source):
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A=LW
A=30*10
A=300 sq ft


Sequences-and-series/511867: Can you aolve this equation, and give me the steps, -3(z+5)=15
1 solutions

Answer 342451 by rfer(12657) About Me  on 2011-10-09 17:08:59 (Show Source):
You can put this solution on YOUR website!
-3x-15=15
-3x=15+15
-3x=30
x=30/-3
x=-10


Graphs/511925: Please help me solve this. I am completely lost. Thank you.
Use the distributive property of multiplication to rewrite -1/3 (9x-6).
1 solutions

Answer 342448 by rfer(12657) About Me  on 2011-10-09 17:04:27 (Show Source):
You can put this solution on YOUR website!
-1/3*9x=-3x
-1/3*-6=2
=-3x+2


Linear-equations/511926: find the slope of the line that goes through the following points (-4,6),(-8,6)
1 solutions

Answer 342446 by rfer(12657) About Me  on 2011-10-09 17:01:09 (Show Source):
You can put this solution on YOUR website!
slope
m=(6-6)/-8--4)
m=0/-4
m=0
no slope


Equations/511919: what is the step to solve -(-12)+(-11)-6-4-(-3)
1 solutions

Answer 342445 by rfer(12657) About Me  on 2011-10-09 16:59:20 (Show Source):
You can put this solution on YOUR website!
use the order of operations
+12-11-10+3=-6


percentage/511797: Ned Conducted a survey with his classmates to find their preferences about three kinds of icecream. The circle graph below shows the results of his survey.
-25 percent (vanilla)
-33 percent (chocolate)
-20 percent (strawberry)
-22 percent (other)
If 25 students prefer strawberry icecream, how many students are in Ned's class?
1 solutions

Answer 342422 by rfer(12657) About Me  on 2011-10-09 14:37:36 (Show Source):
You can put this solution on YOUR website!
25/0.20=125 students


test/511755: 4x2/5
1 solutions

Answer 342420 by rfer(12657) About Me  on 2011-10-09 14:34:03 (Show Source):
You can put this solution on YOUR website!
4/1*2/5=8/5=1 3/5


Percentage-and-ratio-word-problems/511564: Whats the percent of 9 17/50

1 solutions

Answer 342282 by rfer(12657) About Me  on 2011-10-08 19:33:36 (Show Source):
You can put this solution on YOUR website!
(17/50)/(9/1)=
17/50*1/9=17/450=0.0378=3.78%


Numeric_Fractions/511489: y=1/4(-8)-3
1 solutions

Answer 342268 by rfer(12657) About Me  on 2011-10-08 17:29:50 (Show Source):
You can put this solution on YOUR website!
y=-8/4-3
y=-2-3
y=-5


Expressions-with-variables/511557: 10 total batteries used 6 volt and 12 volt batteries hooked in a series equal 84 volts. how many of each type of battery is used?
1 solutions

Answer 342266 by rfer(12657) About Me  on 2011-10-08 17:26:59 (Show Source):
You can put this solution on YOUR website!
s+t=10 t=10-s
--------------
6s+12t=84
6s+12(10-s)=84
6s+120-12s=84
-6s=84-120
-6s=-36
s=6 six volt batteries
t=10-6=4 tewelve volt batteries
-------------------------------
6*6+12*4=84
36+48=84