Algebra ->  Tutoring on algebra.com -> See tutors' answers!      Log On

 Tutoring Home For Students Tools for Tutors Our Tutors Register Recently Solved
 By Tutor
| By Problem Number |

Tutor:

# Recent problems solved by 'rfer'

Jump to solutions: 0..29 , 30..59 , 60..89 , 90..119 , 120..149 , 150..179 , 180..209 , 210..239 , 240..269 , 270..299 , 300..329 , 330..359 , 360..389 , 390..419 , 420..449 , 450..479 , 480..509 , 510..539 , 540..569 , 570..599 , 600..629 , 630..659 , 660..689 , 690..719 , 720..749 , 750..779 , 780..809 , 810..839 , 840..869 , 870..899 , 900..929 , 930..959 , 960..989 , 990..1019 , 1020..1049 , 1050..1079 , 1080..1109 , 1110..1139 , 1140..1169 , 1170..1199 , 1200..1229 , 1230..1259 , 1260..1289 , 1290..1319 , 1320..1349 , 1350..1379 , 1380..1409 , 1410..1439 , 1440..1469 , 1470..1499 , 1500..1529 , 1530..1559 , 1560..1589 , 1590..1619 , 1620..1649 , 1650..1679 , 1680..1709 , 1710..1739 , 1740..1769 , 1770..1799 , 1800..1829 , 1830..1859 , 1860..1889 , 1890..1919 , 1920..1949 , 1950..1979 , 1980..2009 , 2010..2039 , 2040..2069 , 2070..2099 , 2100..2129 , 2130..2159 , 2160..2189 , 2190..2219 , 2220..2249 , 2250..2279 , 2280..2309 , 2310..2339 , 2340..2369 , 2370..2399 , 2400..2429 , 2430..2459 , 2460..2489 , 2490..2519 , 2520..2549 , 2550..2579 , 2580..2609 , 2610..2639 , 2640..2669 , 2670..2699 , 2700..2729 , 2730..2759 , 2760..2789 , 2790..2819 , 2820..2849 , 2850..2879 , 2880..2909 , 2910..2939 , 2940..2969 , 2970..2999 , 3000..3029 , 3030..3059 , 3060..3089 , 3090..3119 , 3120..3149 , 3150..3179 , 3180..3209 , 3210..3239 , 3240..3269 , 3270..3299 , 3300..3329 , 3330..3359 , 3360..3389 , 3390..3419 , 3420..3449 , 3450..3479 , 3480..3509 , 3510..3539 , 3540..3569 , 3570..3599 , 3600..3629 , 3630..3659 , 3660..3689 , 3690..3719 , 3720..3749 , 3750..3779 , 3780..3809 , 3810..3839 , 3840..3869 , 3870..3899 , 3900..3929 , 3930..3959 , 3960..3989 , 3990..4019 , 4020..4049 , 4050..4079 , 4080..4109 , 4110..4139 , 4140..4169 , 4170..4199 , 4200..4229 , 4230..4259 , 4260..4289 , 4290..4319 , 4320..4349 , 4350..4379 , 4380..4409 , 4410..4439 , 4440..4469 , 4470..4499 , 4500..4529 , 4530..4559 , 4560..4589 , 4590..4619 , 4620..4649 , 4650..4679 , 4680..4709 , 4710..4739 , 4740..4769 , 4770..4799 , 4800..4829 , 4830..4859 , 4860..4889 , 4890..4919 , 4920..4949 , 4950..4979 , 4980..5009 , 5010..5039 , 5040..5069 , 5070..5099 , 5100..5129 , 5130..5159 , 5160..5189 , 5190..5219 , 5220..5249 , 5250..5279 , 5280..5309 , 5310..5339 , 5340..5369 , 5370..5399 , 5400..5429 , 5430..5459 , 5460..5489 , 5490..5519 , 5520..5549 , 5550..5579 , 5580..5609 , 5610..5639 , 5640..5669 , 5670..5699 , 5700..5729 , 5730..5759 , 5760..5789 , 5790..5819 , 5820..5849 , 5850..5879 , 5880..5909 , 5910..5939 , 5940..5969 , 5970..5999 , 6000..6029 , 6030..6059 , 6060..6089 , 6090..6119 , 6120..6149 , 6150..6179 , 6180..6209 , 6210..6239 , 6240..6269 , 6270..6299 , 6300..6329 , 6330..6359 , 6360..6389 , 6390..6419 , 6420..6449 , 6450..6479 , 6480..6509 , 6510..6539 , 6540..6569 , 6570..6599 , 6600..6629 , 6630..6659 , 6660..6689 , 6690..6719 , 6720..6749 , 6750..6779 , 6780..6809 , 6810..6839 , 6840..6869 , 6870..6899 , 6900..6929 , 6930..6959 , 6960..6989 , 6990..7019 , 7020..7049 , 7050..7079 , 7080..7109 , 7110..7139 , 7140..7169 , 7170..7199 , 7200..7229 , 7230..7259 , 7260..7289 , 7290..7319 , 7320..7349 , 7350..7379 , 7380..7409 , 7410..7439 , 7440..7469 , 7470..7499 , 7500..7529 , 7530..7559 , 7560..7589 , 7590..7619 , 7620..7649 , 7650..7679 , 7680..7709 , 7710..7739 , 7740..7769 , 7770..7799 , 7800..7829 , 7830..7859 , 7860..7889 , 7890..7919 , 7920..7949 , 7950..7979 , 7980..8009 , 8010..8039 , 8040..8069 , 8070..8099 , 8100..8129 , 8130..8159 , 8160..8189 , 8190..8219 , 8220..8249 , 8250..8279 , 8280..8309 , 8310..8339 , 8340..8369 , 8370..8399 , 8400..8429 , 8430..8459 , 8460..8489 , 8490..8519 , 8520..8549 , 8550..8579 , 8580..8609 , 8610..8639 , 8640..8669 , 8670..8699 , 8700..8729 , 8730..8759 , 8760..8789 , 8790..8819 , 8820..8849 , 8850..8879 , 8880..8909 , 8910..8939 , 8940..8969 , 8970..8999 , 9000..9029 , 9030..9059 , 9060..9089 , 9090..9119 , 9120..9149 , 9150..9179 , 9180..9209 , 9210..9239 , 9240..9269 , 9270..9299 , 9300..9329 , 9330..9359 , 9360..9389 , 9390..9419 , 9420..9449 , 9450..9479 , 9480..9509 , 9510..9539 , 9540..9569 , 9570..9599 , 9600..9629 , 9630..9659 , 9660..9689 , 9690..9719 , 9720..9749 , 9750..9779 , 9780..9809 , 9810..9839 , 9840..9869 , 9870..9899 , 9900..9929 , 9930..9959 , 9960..9989 , 9990..10019 , 10020..10049 , 10050..10079 , 10080..10109 , 10110..10139 , 10140..10169 , 10170..10199 , 10200..10229 , 10230..10259 , 10260..10289 , 10290..10319 , 10320..10349 , 10350..10379 , 10380..10409 , 10410..10439 , 10440..10469 , 10470..10499 , 10500..10529 , 10530..10559 , 10560..10589 , 10590..10619 , 10620..10649 , 10650..10679 , 10680..10709 , 10710..10739 , 10740..10769 , 10770..10799 , 10800..10829 , 10830..10859 , 10860..10889 , 10890..10919 , 10920..10949 , 10950..10979 , 10980..11009 , 11010..11039 , 11040..11069 , 11070..11099 , 11100..11129 , 11130..11159 , 11160..11189 , 11190..11219 , 11220..11249 , 11250..11279 , 11280..11309 , 11310..11339 , 11340..11369 , 11370..11399 , 11400..11429 , 11430..11459 , 11460..11489 , 11490..11519 , 11520..11549 , 11550..11579 , 11580..11609 , 11610..11639 , 11640..11669 , 11670..11699 , 11700..11729 , 11730..11759 , 11760..11789 , 11790..11819 , 11820..11849 , 11850..11879 , 11880..11909 , 11910..11939 , 11940..11969 , 11970..11999 , 12000..12029 , 12030..12059 , 12060..12089 , 12090..12119 , 12120..12149 , 12150..12179 , 12180..12209 , 12210..12239 , 12240..12269 , 12270..12299 , 12300..12329 , 12330..12359 , 12360..12389 , 12390..12419 , 12420..12449 , 12450..12479 , 12480..12509 , 12510..12539 , 12540..12569 , 12570..12599 , 12600..12629 , 12630..12659 , 12660..12689 , 12690..12719 , 12720..12749 , 12750..12779 , 12780..12809 , 12810..12839 , 12840..12869 , 12870..12899 , 12900..12929 , 12930..12959 , 12960..12989 , 12990..13019 , 13020..13049 , 13050..13079 , 13080..13109 , 13110..13139 , 13140..13169 , 13170..13199 , 13200..13229 , 13230..13259 , 13260..13289 , 13290..13319 , 13320..13349 , 13350..13379 , 13380..13409 , 13410..13439 , 13440..13469 , 13470..13499 , 13500..13529 , 13530..13559 , 13560..13589, >>Next

 Travel_Word_Problems/512126: I drove 280 miles in 6 hours what is this total in a fraction1 solutions Answer 342558 by rfer(13569)   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(13569)   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(13569)   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(13569)   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(13569)   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(13569)   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(13569)   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(13569)   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(13569)   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(13569)   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(13569)   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(13569)   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(13569)   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
 Exponents-negative-and-fractional/511271: 17/511 solutions Answer 342126 by rfer(13569)   on 2011-10-07 22:01:04 (Show Source): You can put this solution on YOUR website!=1/3
 absolute-value/511288: what is the solution set x -6= 81 solutions Answer 342124 by rfer(13569)   on 2011-10-07 21:59:54 (Show Source): You can put this solution on YOUR website!x=14
 Travel_Word_Problems/511323: how long would it take to run a mile if you were travelling at a constant speed of 10 miles per hour?1 solutions Answer 342123 by rfer(13569)   on 2011-10-07 21:57:41 (Show Source): You can put this solution on YOUR website!60/10=6 minutes
 Polynomials-and-rational-expressions/511154: solve using addition and multiplication principle 2 + 7x < 23 1 solutions Answer 342084 by rfer(13569)   on 2011-10-07 17:54:24 (Show Source): You can put this solution on YOUR website!7x < 23-2 7x < 21 x < 21/7 x < 3
 Human-and-algebraic-language/511179: twenty is 22 less than six time a certain number?1 solutions Answer 342082 by rfer(13569)   on 2011-10-07 17:52:44 (Show Source): You can put this solution on YOUR website!20=6x-22 44=6x 44/6=x x=7.33
 Angles/511182: x+2x=1801 solutions Answer 342080 by rfer(13569)   on 2011-10-07 17:50:48 (Show Source): You can put this solution on YOUR website!3x=180 x=180/3 x=60
 Inequalities/511186: what is this question. 7w is greater than or equal to -51??1 solutions Answer 342079 by rfer(13569)   on 2011-10-07 17:49:02 (Show Source): You can put this solution on YOUR website!7w >= -51 w >= -51/7 w >= -7.28
 percentage/511221: What is the percentage of 375 over 10001 solutions Answer 342077 by rfer(13569)   on 2011-10-07 17:46:00 (Show Source): You can put this solution on YOUR website!375/1000=.375=37.5%
 Angles/511244: Angle A is half as large as it's complement angle B. Find the measurement of each angle1 solutions Answer 342076 by rfer(13569)   on 2011-10-07 17:43:49 (Show Source): You can put this solution on YOUR website!x+2x=90 3x=90 x=90/3 x=30 2x=60
 Equations/511248: 4p+6 if p=1 1/21 solutions Answer 342075 by rfer(13569)   on 2011-10-07 17:42:50 (Show Source): You can put this solution on YOUR website!4*1.5+6=12
 Angles/510908: the ? is: the measure of one angle is three times the measure of its complement. find the measure of each angle and this is all they give you.1 solutions Answer 341969 by rfer(13569)   on 2011-10-06 23:15:31 (Show Source): You can put this solution on YOUR website!x+3x=90 4x=90 x=22.5 3x=67.5
 Numbers_Word_Problems/510989: three more than twice a certain number is seven less than three times the number. find the number1 solutions Answer 341967 by rfer(13569)   on 2011-10-06 23:12:17 (Show Source): You can put this solution on YOUR website!2x+3=3x-7 2x-3x=-7-3 -x=-10 x=+10
 Money_Word_Problems/510987: Co. made an adjusting entry accruing interest for \$800 on a note payable for the month of January. The note required 12% per annum on the principal. The principal amount of the note payable must have been1 solutions Answer 341966 by rfer(13569)   on 2011-10-06 23:10:27 (Show Source): You can put this solution on YOUR website!0.12/12=0.01 800/0.01=\$80,000
 Circles/510913: 1 solutions Answer 341965 by rfer(13569)   on 2011-10-06 23:08:21 (Show Source): You can put this solution on YOUR website!3k-33 > 12 3k > 12+33 3k > 45 k > 45/3 k > 15
 Finance/510950: Find the slope of the line between (-4,5)and(7,8) im confused how to find the slope1 solutions Answer 341963 by rfer(13569)   on 2011-10-06 23:06:14 (Show Source): You can put this solution on YOUR website!slope m=(y1-y2)/(x1-x2) m=(8-5)/(7--4) m=3/11
 Linear-equations/510954: Find the slope of the line passing through the points (4,8) and (8,7).1 solutions Answer 341961 by rfer(13569)   on 2011-10-06 23:03:22 (Show Source): You can put this solution on YOUR website!slope m m=(7-8)/(8-4) m=-1/4 ---------------- y=mx+b 7=-1/4*8+b 7=-2+b 7+2=b b=9 ------------ y=-1/4x+9
 Linear-equations/510961: What slope-intercept equation represents a line that passes through the point (1,-5) and is parallel to the line y=-4x-5?1 solutions Answer 341960 by rfer(13569)   on 2011-10-06 23:00:21 (Show Source): You can put this solution on YOUR website!-5=-4*1+b -5=-4+b -5+4=b b=-1 ------- y=-4x-1
 Equations/510976: (3p-4)=311 solutions Answer 341959 by rfer(13569)   on 2011-10-06 22:58:47 (Show Source): You can put this solution on YOUR website!3p-4=31 3p=31+4 3p=35 p=35/3 p=11.7