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# Recent problems solved by 'rfer'

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 test/512687: (x)(x)(x3)1 solutions Answer 342700 by rfer(12657)   on 2011-10-10 20:40:26 (Show Source): You can put this solution on YOUR website!=x^5
 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. 61 solutions Answer 342681 by rfer(12657)   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 501 solutions Answer 342678 by rfer(12657)   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 181 solutions Answer 342676 by rfer(12657)   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)   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)   on 2011-10-10 18:52:24 (Show Source): You can put this solution on YOUR website!x+2
 Equations/512607: 1/6(6-x)=27+2x1 solutions Answer 342672 by rfer(12657)   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 241 solutions Answer 342671 by rfer(12657)   on 2011-10-10 18:48:25 (Show Source): You can put this solution on YOUR website!24/0.16=150
 Proportions/512616: solve this proportion.. 16 over 7 = m over 21 1 solutions Answer 342669 by rfer(12657)   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=9-2x1 solutions Answer 342649 by rfer(12657)   on 2011-10-10 17:00:20 (Show Source): You can put this solution on YOUR website!-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)   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)   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 price1 solutions Answer 342645 by rfer(12657)   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 squared1 solutions Answer 342644 by rfer(12657)   on 2011-10-10 16:50:56 (Show Source): You can put this solution on YOUR website!17+16=33
 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)   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 number1 solutions Answer 342642 by rfer(12657)   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 form1 solutions Answer 342561 by rfer(12657)   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)   on 2011-10-09 23:37:36 (Show Source): You can put this solution on YOUR website!=33.36
 Travel_Word_Problems/512126: I drove 280 miles in 6 hours what is this total in a fraction1 solutions Answer 342558 by rfer(12657)   on 2011-10-09 23:34:37 (Show Source): You can put this solution on YOUR website!280/6=46 2/3
 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)   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 solve1 solutions Answer 342554 by rfer(12657)   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)   on 2011-10-09 23:25:01 (Show Source): You can put this solution on YOUR website!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)=151 solutions Answer 342451 by rfer(12657)   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)   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)   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)   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)   on 2011-10-09 14:37:36 (Show Source): You can put this solution on YOUR website!25/0.20=125 students
 test/511755: 4x2/51 solutions Answer 342420 by rfer(12657)   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)   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)-31 solutions Answer 342268 by rfer(12657)   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)   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