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

Angles/344286: an angle meausuring 51 what is the measure of its supplementary angle 1 solutions Answer 246316 by Fombitz(13828)   on 2010-09-16 22:33:18 (Show Source): You can put this solution on YOUR website!

Complex_Numbers/344305: Find the solutions of the equation. x^3-125= 0 x^3= 125 x= 5 How can I find the COMPLEX solutions? I believe you have to use the quadratic equation but I'm not really sure how to factor x^3-125. Thanks! 1 solutions Answer 246315 by Fombitz(13828)   on 2010-09-16 22:32:38 (Show Source): You can put this solution on YOUR website! No, you can't use the quadratic formula on a cubic equation. Recognize that this is the difference of two cubes. One solution is . . . Now find the root of the quadratic equation with the quadratic formula, where

Age_Word_Problems/344330: 3 to the second power times 5 times what = 315 1 solutions Answer 246314 by Fombitz(13828)   on 2010-09-16 22:27:28 (Show Source): You can put this solution on YOUR website!

Linear-equations/344292: passes through (0,3), parallel to graph of 6y-10x = 30 1 solutions Answer 246313 by Fombitz(13828)   on 2010-09-16 22:26:26 (Show Source): You can put this solution on YOUR website! Parallel means the left hand side of the equation is identical. Use the point to find the right hand side.

Exponents-negative-and-fractional/344309: How would you solve x to the negative third power times x to the negative fourth power? 1 solutions Answer 246312 by Fombitz(13828)   on 2010-09-16 22:24:56 (Show Source): You can put this solution on YOUR website! Use the law of exponents, same base, multiplication, exponents add.

Equations/344328: what is w-(-5)=4 1 solutions Answer 246311 by Fombitz(13828)   on 2010-09-16 22:23:57 (Show Source): You can put this solution on YOUR website! Negative times a negative is a positive.

Radicals/344326: Hi, How do you solve: x^3 - 2x^2 + 9x - 18 = 0 the teacher has given us one solution, 3i/square root of -9. i need two other solutions and am not sure how to obtain them. i have tried rational root theorem/ long division but do not know how to do it with square roots and imaginary numbers. thanks 1 solutions Answer 246310 by Fombitz(13828)   on 2010-09-16 22:23:17 (Show Source): You can put this solution on YOUR website! Complex solutions always come in complex conjugate pairs. So, if is a solution, then is also a solution. You can then use polynomial long division to find the last root, You can then get Also, since only one root remains you know it must be real. You could graph the equation and find it that way too. . . . . Looks like might be a number to stick in the function to see if .

Complex_Numbers/344327: what does an imaginery number mean?? like in the equation (3+2i)+(5-4i). i dont understand the purpose of the "i". 1 solutions Answer 246309 by Fombitz(13828)   on 2010-09-16 22:18:16 (Show Source): You can put this solution on YOUR website! was invented for equations like this . Since real numbers square can only take positive values, then no real number can solve that equation. Complex numbers were created just for that reason. In this case, if I know that, so then .

Complex_Numbers/344307: Find the solutions of the equation. 4x^4 + 37x^2 +9 = 0 I need to find both the real and complex solutions! Thanks! 1 solutions Answer 246308 by Fombitz(13828)   on 2010-09-16 22:15:35 (Show Source): You can put this solution on YOUR website! You can factor this equation. Two solutions: where . . . where

Geometric_formulas/344323: if UY = 4x - 3 and YV = x, Find UY and UV. Please show the work. 1 solutions Answer 246307 by Fombitz(13828)   on 2010-09-16 22:11:11 (Show Source): You can put this solution on YOUR website! Is there a relationship between Y, U, and V? Is it the midpoint? OK, Y is the midpoint. So then, . . . . . .

Exponents/344317: I am trying to figure out how to solve for "n" when it is 2 to the "n" power in the following equation: 2^n+6=14. 2^n+6-6=14-6 2^n=8 I am unclear where to go from here. How to I isolate the exponent "n" to find the solution? 1 solutions Answer 246306 by Fombitz(13828)   on 2010-09-16 22:08:18 (Show Source): You can put this solution on YOUR website! You could recognize that and substitute. or take the log (base 2) of both sides.

Sequences-and-series/344129: Solve the system of equations 3x + y =1 -x + 2y = 9 1 solutions Answer 246229 by Fombitz(13828)   on 2010-09-16 18:06:07 (Show Source): You can put this solution on YOUR website! Solve the system of equations 1. 2. Multiply eq. 2 by 3 and add to eq. 1, . . . From eq. 2,

Complex_Numbers/344153: If x is a real number and x^64 = 64 and x^32 =32, what is x? 1 solutions Answer 246228 by Fombitz(13828)   on 2010-09-16 18:03:49 (Show Source): You can put this solution on YOUR website! By the law of exponents, So if you substitute the values, Something's not right here. Check your numbers.

Word_Problems_With_Coins/344080: You have 30 coins. You have nickels, twice as many dimes as nickels and quarters. You have $5.50 total. How many of each coin do you have? 1 solutions Answer 246179 by Fombitz(13828)   on 2010-09-16 16:18:25 (Show Source): You can put this solution on YOUR website! 1. 2. 3. Substitute eq. 2 into eq. 1 and eq. 3. 4. . . . 5. From eq. 4, Substitute from eq. 5, . . . . . . Then from eq. 1,

test/344086: Undefined and defined 1 solutions Answer 246175 by Fombitz(13828)   on 2010-09-16 16:14:03 (Show Source): You can put this solution on YOUR website! I know it's not Jeopardy but you need to form a question.

Exponents/344075: (x2y2)2 (x-1) in the parethesis the number after the x and y are exponents I dont know how to type the problem correctly How do I show a exponent on the keyboard 1 solutions Answer 246170 by Fombitz(13828)   on 2010-09-16 16:08:53 (Show Source): You can put this solution on YOUR website! Using the caret "^". (x^2y^2)^2= What's your question?

Word_Problems_With_Coins/344077: A pharmacist has 20 L of a 10% drug solution. How many liters of 5% solution must be added to get a mixture that is 8%? 1 solutions Answer 246168 by Fombitz(13828)   on 2010-09-16 16:07:32 (Show Source): You can put this solution on YOUR website! Let A be the amount of 5% solution. liters.

Radicals/344071: what is radical 9ab raised to the third power? 1 solutions Answer 246163 by Fombitz(13828)   on 2010-09-16 15:50:48 (Show Source): You can put this solution on YOUR website!

Angles/344065: Proof: given: angle 1 is congruent to angle 2 Prove: angle 3 is congruent to angle 4 What is the proof? 1 solutions Answer 246159 by Fombitz(13828)   on 2010-09-16 15:45:59 (Show Source): You can put this solution on YOUR website! Do you have a diagram to describe the relationship between angles 1,2,3 and 4??

Trigonometry-basics/344068: Solve for Y : 9x-6xy=30 1 solutions Answer 246158 by Fombitz(13828)   on 2010-09-16 15:45:16 (Show Source): You can put this solution on YOUR website!

Numbers_Word_Problems/344066: what 2 numbers(1-9) equal 18 when added together? 1 solutions Answer 246156 by Fombitz(13828)   on 2010-09-16 15:43:51 (Show Source): You can put this solution on YOUR website!

Quadratic_Equations/343971: A parabola with the equation of the form y = ax^2 + bx + c has the point (3, 1) as its vertex. If (1, 3) also lies on the parabola, which of the following is another point on this parabola? (A)(-3, -1) (B) (-1,-3) (C) (2, 2)(D) (2, 6) (E) (5, 3) 1 solutions Answer 246154 by Fombitz(13828)   on 2010-09-16 15:42:32 (Show Source): You can put this solution on YOUR website! In vertex form, Using (,), . . . Now that you have the equation, test all of the points. I'll do one, you do the remaining four. A) (,): False, so (,) is not a point on the parabola. Continue with the remaining points in the same manner. . . .

Linear-systems/344051: I bought 10 lbs. of Stayman apples and x lbs. of golden delicious apples at the orchard. What was the combined weight of the apples? 1 solutions Answer 246153 by Fombitz(13828)   on 2010-09-16 15:37:58 (Show Source): You can put this solution on YOUR website!

Equations/344063: 2/3+3y=5y-2/15 1 solutions Answer 246151 by Fombitz(13828)   on 2010-09-16 15:37:15 (Show Source): You can put this solution on YOUR website! Multiply both sides by .

Linear_Equations_And_Systems_Word_Problems/344052: Problem solving using linear equation problem question : Zara works part-time at a flower shop. She is making a flower arrangement for a customer with a total of 30 flowers, using two types of flowers. she asked to use four times as many carnations as roses. how many of each will be in the arrangement? i tried to solve this question many times but couldn't get the right answer so please can you help me? 1 solutions Answer 246150 by Fombitz(13828)   on 2010-09-16 15:34:11 (Show Source): You can put this solution on YOUR website! The total number of carnations and roses is 30. 1. There are four times as many carnations as roses. 2. Substitute eq. 2 into eq. 1, Now solve for . . . . Once you have , use either equation to solve for .

Angles/344061: angle A is 21 less than twice as large as its supplement angle B 1 solutions Answer 246148 by Fombitz(13828)   on 2010-09-16 15:31:05 (Show Source): You can put this solution on YOUR website! . . . Substitute, degrees . . degrees

Probability-and-statistics/344056: A certain diet claims to lower cholesterol by an average of 60 points with a standard deviation of 7. Find the probability that the mean amount lowered will be more than 75 points. 1 solutions Answer 246147 by Fombitz(13828)   on 2010-09-16 15:29:20 (Show Source): You can put this solution on YOUR website! Find the z-score.

Equations/344060: Solve the equation x^4-2⁢x^2-15=0 1 solutions Answer 246145 by Fombitz(13828)   on 2010-09-16 15:26:12 (Show Source): You can put this solution on YOUR website! Two solutions: where . . .

Radicals/344059: Solve by multiplying both side by the LCD. x+3/x-1 + x+4/x+1 = 8x+5/x^2-1 My Work: (x+1)(x+3)+(x-1)(x+4)=8x+5 2x^2-7x-1=8x+5 2x^2-15x-6=0 no solution Is this correct please help thanks 1 solutions Answer 246144 by Fombitz(13828)   on 2010-09-16 15:24:24 (Show Source): You can put this solution on YOUR website! <--- You had (-7x) Use the zero product property to solve for the two solutions.

Age_Word_Problems/344048: Melissa is 24 years younger than Joyce. In 2 years, Joyce will be 3 times as old at Melissa will be then. How old are they now? 1 solutions Answer 246143 by Fombitz(13828)   on 2010-09-16 15:18:09 (Show Source): You can put this solution on YOUR website! 1. In two years, Melissa will be , Joyce will be . 2. Substitute eq. 1 into eq. 2, Then . . . Joyce is 34 years old and Melissa is 10 years old.

Polynomials-and-rational-expressions/344050: Hello, I need to factor the Polynomial completely and I just don't get how to do it. If you can help me get started I might be able to figure it out. The problem is Thank you for your help. 1 solutions Answer 246141 by Fombitz(13828)   on 2010-09-16 15:15:25 (Show Source): You can put this solution on YOUR website! First factor out the highest power of and the too. You can further factor the quadratic equation. Look at factors of that sum to .