Tutor:

New! Get regular updates about newly solved problems via algebra.com's RSS system.

---

Recent problems solved by 'Fombitz'

Fombitz answered: 13805 problems
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

Rational-functions/349207: 4y-y 1 solutions Answer 249655 by Fombitz(13828)   on 2010-09-28 14:31:13 (Show Source): You can put this solution on YOUR website!

Graphs/349190: sketch the graph of y=-f(x) (-5,-3) 1 solutions Answer 249654 by Fombitz(13828)   on 2010-09-28 14:25:48 (Show Source): You can put this solution on YOUR website! What is f(x)?

Linear-equations/349197: By looking at two linear equations the way you can tell the corresponding lines are parallel is that the slopes would be the same and the y intercepts are different that would should you. 1 solutions Answer 249652 by Fombitz(13828)   on 2010-09-28 14:25:08 (Show Source): You can put this solution on YOUR website! True, same slopes, different intercept, the lines are parallel.

Quadratic_Equations/349143: Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function. f(x)=8-x^2 1 solutions Answer 249651 by Fombitz(13828)   on 2010-09-28 14:22:22 (Show Source): You can put this solution on YOUR website! Convert to vertex form, (h,k)=(0,8) The vertex lies on the axis of symmetry . Since the multiplier for is negative, the parabola opens downwards and the value at the vertex is a maximum. . . .

Quadratic_Equations/349173: 4/9y^2 + 1 = 0 solve equation 1 solutions Answer 249649 by Fombitz(13828)   on 2010-09-28 14:18:50 (Show Source): You can put this solution on YOUR website! where

Polynomials-and-rational-expressions/349202: (x^3+7x^2-5x-6) divided by (x+2) 1 solutions Answer 249646 by Fombitz(13828)   on 2010-09-28 14:15:58 (Show Source): You can put this solution on YOUR website! Use polynomial long division, x^2 + 5x - 15 __________________________ x + 2 | x^3 + 7x^2 - 5x - 6 - x^3 + 2x^2 --------------------- 5x^2 - 5x - 6 - 5x^2 + 10x -------------- -15x - 6 - -15x -30 ---------- 24

Polynomials-and-rational-expressions/349150: IT SAYS TO FACTOR OUT THE GCF X(X-5)-2(X-5) 1 solutions Answer 249586 by Fombitz(13828)   on 2010-09-28 11:12:31 (Show Source): You can put this solution on YOUR website!

Expressions-with-variables/349148: How do you work the problem... Y=x+8 and X+Y=2 1 solutions Answer 249585 by Fombitz(13828)   on 2010-09-28 11:11:52 (Show Source): You can put this solution on YOUR website! 1. 2. Use substitution, substitute eq. 1 into eq. 2 and solve for . Now use eq. 1 to solve for y. . . . Verify by plugging the solutions into the original equations. True. True. It's a good solution.

Expressions-with-variables/348995: Perform the indicated operations and simplify. x+2/5(x-3) divided by x-2/5(x-3) I know you keep change flip. x+2/5(x-3) times 5(x-3)/x-2 I don't know what to do afterwards 1 solutions Answer 249584 by Fombitz(13828)   on 2010-09-28 11:08:32 (Show Source): You can put this solution on YOUR website! Eliminate common factors in the numerator and denominator, . . . .

Numbers_Word_Problems/348993: In any triangle the sum of the measures of the angles is 180 degrees. In triangle ABC, angle A is three times as large as angle B and also 16 degrees larger than angle C. Find the measure of each angle. 1 solutions Answer 249583 by Fombitz(13828)   on 2010-09-28 11:05:15 (Show Source): You can put this solution on YOUR website! . . . . . . . Substitute, degrees . . degrees . . degrees

Polynomials-and-rational-expressions/349141: (2b+c)(3b+2c) 1 solutions Answer 249582 by Fombitz(13828)   on 2010-09-28 11:00:36 (Show Source): You can put this solution on YOUR website! Use the FOIL method,

Polynomials-and-rational-expressions/349050: what is simplifying rational algebraic expressions of 4c/6c, 3x-12/16-4x, 5x-15/9-3x?? 1 solutions Answer 249581 by Fombitz(13828)   on 2010-09-28 10:59:00 (Show Source): You can put this solution on YOUR website! . . . . . .

Exponential-and-logarithmic-functions/349056: 1. calculate without tables or calculators Log6(1÷216) power two third Question 2 Express as single logarithim Log5 20 + Log5 15 - Log5 12 1 solutions Answer 249579 by Fombitz(13828)   on 2010-09-28 10:54:46 (Show Source): You can put this solution on YOUR website! . . .

Linear_Algebra/349119: A wire 50 ft long was cut into two pieces of different lengths. Use one variable to express the lengths of the two pieces. Find the length of each piece. 1 solutions Answer 249569 by Fombitz(13828)   on 2010-09-28 10:37:04 (Show Source): You can put this solution on YOUR website! Let the one cut length be x and the other cut length be y. . . . . . One length: Other length: Without more information, you can't actually solve for the values.

Mixture_Word_Problems/349128: How many gallons of a 2% salt solution must be mixed with 40 gallons of a 8% solution to obtain a 6% solution? 1 solutions Answer 249567 by Fombitz(13828)   on 2010-09-28 10:34:38 (Show Source): You can put this solution on YOUR website! Let be the amount of 2% solution. gallons

Travel_Word_Problems/349124: On a road trip from Boston to Miami, Nancy stopped in Baltimore which is 390 miles from Boston. If Baltimore is 0.26 of the trip to Miami, how far is it from Boston to Miami? 1 solutions Answer 249564 by Fombitz(13828)   on 2010-09-28 10:13:43 (Show Source): You can put this solution on YOUR website! miles

Graphs/349031: what is the cost c of a telegram of 18 words is the cost f of the first 10 words plus the cost a of each additional word. 1 solutions Answer 249563 by Fombitz(13828)   on 2010-09-28 10:10:45 (Show Source): You can put this solution on YOUR website! The first ten words cost . There are eight words remaining. The cost of the remaining words is . So the total cost, , is

Functions/349120: I am having a hard time solving this problem Function p(d)=1+d/33 P(0)=1 and P(33)=2 find the pressure at 190 feet 1 solutions Answer 249562 by Fombitz(13828)   on 2010-09-28 10:08:56 (Show Source): You can put this solution on YOUR website! Complete the calculation for the final answer.

Functions/349121: f(x)=1+(3/(x-2)) Find the inverse function f^-1(x) 1 solutions Answer 249560 by Fombitz(13828)   on 2010-09-28 10:07:48 (Show Source): You can put this solution on YOUR website! Use x-y format. Now interchange x and y and solve for y. That'll be the inverse.

Number-Line/349055: how to draw square root of 5 divided by 2 on a number line 1 solutions Answer 249558 by Fombitz(13828)   on 2010-09-28 10:04:40 (Show Source): You can put this solution on YOUR website! First figure out it's value. So the value is between and , about of the way towards .

Rectangles/349117: A rectangle is 3 units longer than it is wide. What is the length of the rectangle in terms of w? My answer is P=2l+2w+3 1 solutions Answer 249556 by Fombitz(13828)   on 2010-09-28 10:01:25 (Show Source): You can put this solution on YOUR website! No,that's not it. Length in terms of width would be, . . . Perimeter in terms of width would be,

Geometry_proofs/349109: Given: m < ABC = m Prove: m<2=M<3 1 solutions Answer 249554 by Fombitz(13828)   on 2010-09-28 09:58:35 (Show Source): You can put this solution on YOUR website! Do you have a diagram or can you clearly explain the relationship between ABC, DFE, 1, 2, 3 and 4??

Sequences-and-series/349113: Find an experssion for the nth term, and find the 75th term: -1,-6,-11,-16 1 solutions Answer 249553 by Fombitz(13828)   on 2010-09-28 09:57:10 (Show Source): You can put this solution on YOUR website! . . .

Linear-equations/349111: The following data consists of test scores and hours of preparation for 5 randomly selected students in a class. For example, the student who spent 6 hours preparing for the test had a score of 73. Hours of Preparation 5 2 9 6 10 Test Score 64 48 72 73 82 a. Find the equation of the regression line for this data. Round values to three decimal places. b. Find the best predicted test score for a student who spent 4 hours preparing for the test. Round to the nearest whole number 1 solutions Answer 249552 by Fombitz(13828)   on 2010-09-28 09:53:30 (Show Source): You can put this solution on YOUR website! a) . . . . . . . . . b)

Functions/349114: f(x)=1+3/(x-2) Give the equations of the horizontal and vertical asymptotes for y=f(x) 1 solutions Answer 249548 by Fombitz(13828)   on 2010-09-28 09:43:37 (Show Source): You can put this solution on YOUR website! The vertical asymptotes occur when there is a division by zero. The horizontal asymptotes occur as the function goes to infinity. . . .

Rational-functions/349108: 2x-3y+4z=1 x+3y-2z=4 3x-y+z=2 So far i have tried this.. 2x-3y+4z=-1 x+3y-2x=4 = 3x+0+2z=3 and then i tried another problem to solve that one.. x+3y-2z=4 x+3y-2z=4 3(3x-y+z=2) = 9x-3y+3z=6 and my answer to tis solution was.. 10x-0+z=10 in my opinion it isn't right. 1 solutions Answer 249547 by Fombitz(13828)   on 2010-09-28 09:39:22 (Show Source): You can put this solution on YOUR website! 1. 2. 3. You can add eq. 1 and eq. 2 to eliminate . 4. Multiply eq. 3 by 3 and add to eq. 2, 5. . . . Multiply eq. 5 by (-2) and add to eq. 4 to eliminate . Now work backwards to solve for and From eq. 5, Then from eq. 3,

Polynomials-and-rational-expressions/349066: hello 1 solutions Answer 249542 by Fombitz(13828)   on 2010-09-28 09:32:27 (Show Source): You can put this solution on YOUR website! Right back at you. Stop by next time and ask a question.

Expressions-with-variables/348991: Perform the indicated operations and simplify. (x+5)(x-3)/x+2 times 1/(x+5)(x+2) I multiplied right across and I got (x+5)(x-3)/8x^3+24x+20 I don't know if that's what I'm suppose to do. 1 solutions Answer 249540 by Fombitz(13828)   on 2010-09-28 09:31:21 (Show Source): You can put this solution on YOUR website! Eliminate common factors.

Linear-equations/348694: Solve for y: 3y + y/3 = 3(y + 3) 1 solutions Answer 249536 by Fombitz(13828)   on 2010-09-28 09:28:50 (Show Source): You can put this solution on YOUR website!

Linear-systems/349085: Multiply. -4/3*(6/5) 1 solutions Answer 249534 by Fombitz(13828)   on 2010-09-28 09:25:55 (Show Source): You can put this solution on YOUR website!

Functions/349093: find the indicated function values of f(3) 1 solutions Answer 249533 by Fombitz(13828)   on 2010-09-28 09:24:41 (Show Source): You can put this solution on YOUR website! You did not provide the function, .