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 'Fombitz'

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 , 13590..13619 , 13620..13649 , 13650..13679 , 13680..13709 , 13710..13739 , 13740..13769 , 13770..13799 , 13800..13829, >>Next

 Numbers_Word_Problems/156069: This question is from textbook algebra for college students i'm not sure how to solve this problem1 solutions Answer 114973 by Fombitz(13828)   on 2008-09-10 10:10:58 (Show Source): You can put this solution on YOUR website!Please re-post with the questions spelled out. Not all of the tutors have all of the books. Thanks.
 Functions/156117: Find k as a function of j. j=5/k+1 +21 solutions Answer 114972 by Fombitz(13828)   on 2008-09-10 10:09:13 (Show Source):
 Exponential-and-logarithmic-functions/156082: graph the exponential function f(x)=4^x+21 solutions Answer 114970 by Fombitz(13828)   on 2008-09-10 10:06:51 (Show Source):
 Polynomials-and-rational-expressions/156104: CAN SOMEONE PLEASE HELP ME WITH THIS PROBLEM: FIND THE DISTANCE BETWEEN THE PAIR OF POINTS. (-2,-6) and (7,-3)1 solutions Answer 114969 by Fombitz(13828)   on 2008-09-10 10:02:06 (Show Source): You can put this solution on YOUR website!Use the distance formula,(-2,-6) and (7,-3)
 Polynomials-and-rational-expressions/156107: I have a few factoring questions. I would love some assistance. can you factor this so that I can understand what is going on here: 1. 4x^3y^5z^2 - 12x^4y^6z^4 + 16x^2y^5z^3. thank you.1 solutions Answer 114968 by Fombitz(13828)   on 2008-09-10 09:56:46 (Show Source): You can put this solution on YOUR website!Let's do it step by step (x, then y, then z, then any constants) I think that's as much as you can do.
 Numbers_Word_Problems/155993: Two numbers have a product of 676 and a quotient of 41 solutions Answer 114945 by Fombitz(13828)   on 2008-09-10 08:30:06 (Show Source): You can put this solution on YOUR website!Call your numbers A and B. 1. 2. From eq. 2, 2. Substitute that into eq. 1, 1. or From eq. 2, or or Two solutions, (13,52) or (-13,-52).
 Matrices-and-determiminant/156060: Let A and B be 2 × 2 matrices. Let [ 2 3 ] and [ -4 5 ] be the first and second rows of A, respectively. Let [ 2 3 ] and [ -4 5 ] be the first and second columns of B, respectively. If C = AB, then | C | = a. 484 b. 452 c. 582 d. -7241 solutions Answer 114944 by Fombitz(13828)   on 2008-09-10 08:23:43 (Show Source): You can put this solution on YOUR website! a) 484.
 Exponential-and-logarithmic-functions/156085: graph the exponential function f(x)=4^x1 solutions Answer 114942 by Fombitz(13828)   on 2008-09-10 08:14:39 (Show Source):
 Numbers_Word_Problems/156091: The sum of three consecutive integers is 279. Find the integers.1 solutions Answer 114941 by Fombitz(13828)   on 2008-09-10 08:12:48 (Show Source): You can put this solution on YOUR website!Three consecutive integers would be N, N+1, and N+2. So the three integers are 92,93, and 94.
 Rational-functions/155916: Given: f(x)=x^2-4 g(x)=sqrt 2x+4 1)f(x)=o when x= 2)f(g(x)) 3)g(f(0)) 4)find the inverse of f(x)1 solutions Answer 114859 by Fombitz(13828)   on 2008-09-09 16:34:44 (Show Source): You can put this solution on YOUR website!1) and . . . 2) . . . 3) . . . 1) Use x,y nomenclature Interchange x and y Solve for y.
 Linear_Equations_And_Systems_Word_Problems/155880: please help me solve this problem. graph and check to solve the linear system. -x+y=3 x+y=51 solutions Answer 114847 by Fombitz(13828)   on 2008-09-09 15:49:47 (Show Source): You can put this solution on YOUR website!1. 2. Add the two equations together to get rid of x. You can use either 1 or 2 to solve for x. 1. . . . Let graph both lines, First eq. 1, y=x+3. Slope 1, Y intercept 3. . . . Then add eq. 2, y=-x+5. Slope -1, Y-intercept 5. . . . Verifies that (1,4) is the solution.
 Trigonometry-basics/155903: What are the values of the indices i and j for the element that is in the fifth column and fourth row? a. 4, 5, respectively b. 5, 4, respectively c. Either 4, 5 or 5, 4; they are interchangeable d. There are no elements in matrices1 solutions Answer 114844 by Fombitz(13828)   on 2008-09-09 15:41:44 (Show Source): You can put this solution on YOUR website!Matrix terminology is always row,column. 4th row, 5 column, i=4,j=5. a)That element would be .
 Numeric_Fractions/155757: I need to write in simplest form 3 5/12 - 1 7/12 = THanks1 solutions Answer 114810 by Fombitz(13828)   on 2008-09-09 09:56:53 (Show Source): You can put this solution on YOUR website!Change your mixed numbers to fractions. 3 5/12=41/12 1 7/12=19/12 3 5/12 - 1 7/12 = 41/12-19/12 Same denominator, you can subtract. 3 5/12 - 1 7/12 = 41/12-19/12 3 5/12 - 1 7/12 = (41-19)/12 3 5/12 - 1 7/12 = 22/12 3 5/12 - 1 7/12 = (2*11)/(2*6) 3 5/12 - 1 7/12 = 11/6 3 5/12 - 1 7/12 = 1 5/6
 Linear_Equations_And_Systems_Word_Problems/155851: Hi, I'm having problems solving this problem. I need to write an equation in either slope-intercept form, or the standard(general)form: The proper crutch length for someone who has sustained a leg injury and is x inches tall, is given by: y=0.72x+2 (where y is in inches) a) What is the proper crutch length for someone who is 6 feet tall? My answer was: y=0.72(6) + 2 = 4.32 + 2 Y= 6.32 if that the correct answer. Can you help me solve b,c,& d. b) If someone donates a crutch, which is 40 inches long, to a physical therapy clinic, what should be the height of the patient that the clinic who should receive it? c) By how much does the length of the crutch increase or decrease for every increase of 1 inch in height of the patient? d) Graph the equation for x ranging from 30 inches to 100 inches. Choose a suitable scale. 1 solutions Answer 114809 by Fombitz(13828)   on 2008-09-09 09:52:45 (Show Source): You can put this solution on YOUR website!Watch your units. It'd be tough for a 6 foot patient to use a 6 inch crutch. You need to convert the height from feet to inches to use the formula. 6 feet=72 inches Let's change the equation to make it more meaningful where CH stands for crutch height (in inches) and PH, patient height (in inches). a) PH=72 b)CH=40 c) For every inch of PH, CH changes by 0.72. d) At 30 inches, At 100 inches,
 Equations/155856: 100p-4000/100p=.3 solve for p1 solutions Answer 114807 by Fombitz(13828)   on 2008-09-09 09:39:15 (Show Source): You can put this solution on YOUR website! Approximately,
 Polynomials-and-rational-expressions/155737: what on earth does this mean? How do I either solve it or simplify it or WRITE it? 5x^2 + 28x - 10 / x + 6 or 5x^2 + 28x - 10 over x + 6 thank you, if you know any idea of what I should do with this, I'd appreciate it.1 solutions Answer 114804 by Fombitz(13828)   on 2008-09-09 09:09:47 (Show Source): You can put this solution on YOUR website!You would perform a synthetic division of the two polynomials. Similar to long division but the columns signify terms of degrees of x. To get 5x^2, I would need to multiply (x+6) by 5x. That would give me 5x^2+30x. Subtract that from 5x^2+28x-10 would leave -2x-10. to get -2x, I would need to multiply (x+6) by (-2) That would give me -2x-12. Subtract that from -2x-10 would leave 2. I can't go any further. Gather up all of the terms and the remainder.
 Linear-systems/152103: i need to solve this question algebracially 3/4x-2/5y=2 1/2x-3/5y=-21 solutions Answer 114803 by Fombitz(13828)   on 2008-09-09 08:57:21 (Show Source): You can put this solution on YOUR website!1. 2. I'm not a big fan of fractions so I usually multiply both equations to get rid of denominators. Multiply eq. 1 by 20 and eq. 2 by 10. 1. 1. . . . 2. 2. Now use the elimination method to solve. If I multiply eq. 2 by (-3) and add to eq. 1, I can get rid of x, Using eq. 1, 1. . . . Check the answer with the original equations. 1. True. I'll leave it to you to verify that eq. 2 works also.
 Reduction-of-unit-multipliers/155843: Hey you doing I'm kinda stuck on this this problem I've tried it several times. I have to use three unit multipliers to convert 576 cubic inches to cubic feet. I've can up with 192 one time and 48 I know when I can up with the anwser 48 I'm only using 1 unit multiplier and when I do 2 I get the same number back again 576 and if I use another I would only get 48 again. I use 1ft over 12in to try and solve is that correct. If anyone could with this problem I'd gradly appreciate it. thanks1 solutions Answer 114802 by Fombitz(13828)   on 2008-09-09 08:36:50 (Show Source): You can put this solution on YOUR website!Watch your units. The conversion factor is (in^3)(1 ft/12 in)^3=1 ft^3/1728 in^3 576 cu. inches = 1/3 cu. ft.