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

 Equations/327210: find the slope and the y intercept 7x+24=-42y1 solutions Answer 234334 by Fombitz(13828)   on 2010-07-30 15:55:50 (Show Source): You can put this solution on YOUR website!Convert to slope-intercept form, . . . Slope: Intercept:
 Inequalities/327127: Find and Graph the solution set. a. x^3-16x>0 b. x^2-5x<=-61 solutions Answer 234332 by Fombitz(13828)   on 2010-07-30 15:53:45 (Show Source): You can put this solution on YOUR website! Break up the number line into 4 regions: Region 1 : (,) Region 2 : (,) Region 3 : (,) Region 4 : (,) Choose a point in the region (not an endpoint). Test the inequality. If the inequality is satisfied, the region is part of the solution. . . . Region 1: False, this region is not part of the solution. . . . Region 2: True, this region is part of the solution. . . . Region 3: False, this region is not part of the solution. . . . Region 4: True, this region is part of the solution. . . . The solution region is (,) U (,). . . . Verified graphically . . . . . . Similarly, Break up the number line into 3 regions: Region 1 : (,) Region 2 : (,) Region 3 : (,) Choose a point in the region (not an endpoint). Test the inequality. If the inequality is satisfied, the region is part of the solution. . . . Region 1: True, this region is part of the solution. . . . Region 1: False, this region is not part of the solution. . . . Region 2: True, this region is part of the solution. . . . Region 3: False, this region is not part of the solution. . . . The solution region is [,]. Since the inequality includes the "=" the brackets denote that 2 and 3 are included as part of the solution. . . .
 Sequences-and-series/327097: list all the two-digit numbers which leave a remainder of 6 and when 171 is divided by them 1 solutions Answer 234330 by Fombitz(13828)   on 2010-07-30 15:36:04 (Show Source): You can put this solution on YOUR website!Let X and Y both be integers, X has two digits. Look for factors of 165 The 2 digit product combiations are then There are 4 2-digit numbers that leave a remainder of 6.
 Equations/327194: please solve this: 50/5x10-6x2+8=1 solutions Answer 234329 by Fombitz(13828)   on 2010-07-30 15:22:55 (Show Source): You can put this solution on YOUR website!You can't solve it unless there is something after the "=". If not it's just an expression. You can simplify an expression, but you can't solve it. If that's what you're looking for then is in its simplest form because it is not factorable. In addition all of the solutions of are complex.
 Equations/327169: 50/5x10-6x2+81 solutions Answer 234327 by Fombitz(13828)   on 2010-07-30 15:07:38 (Show Source): You can put this solution on YOUR website!What's the question?
 Linear-equations/327190: find the horizontal asymptote if any of the raph of each rational function g(x)= 12x^2/3x^2 +11 solutions Answer 234326 by Fombitz(13828)   on 2010-07-30 15:07:10 (Show Source): You can put this solution on YOUR website! . . .
 Linear-equations/327187: find the vertical asyptotes, if any of the graph of each rational funtion f(x)= x/x-31 solutions Answer 234324 by Fombitz(13828)   on 2010-07-30 15:03:49 (Show Source): You can put this solution on YOUR website!Vertical asymptotes occur when the denominator equals zero. . . . . . . The blue line shows the asymptote.
 Probability-and-statistics/327173: The measure of the length of the index finger of a human right hand is normally distributed with a mean of 6cm and a standard deviation of 0.5cm What is the probability that the index finger length of a randomly selected person will between 5cm and 7.5cm? a) .9759 b) .0241 c) .95 d) 1.0 e) none of the above Please show work so i can understand1 solutions Answer 234322 by Fombitz(13828)   on 2010-07-30 15:01:17 (Show Source): You can put this solution on YOUR website!Find the z-score for each, . . . Find P(z1) and P(z2). To find the probability for the range, subtract. . . . a) is the correct answer.
 Word_Problems_With_Coins/327184: HOw many dimes & nickles make 3.60 1 solutions Answer 234319 by Fombitz(13828)   on 2010-07-30 14:57:20 (Show Source): You can put this solution on YOUR website!There are multiple answers to that question. Such as 35 dimes and 2 nickels or 1 dime and 70 nickels. You need another piece of information relating the dimes and nickels to pin down the answer.
 Linear-equations/327185: graph the following function f(x)= 2/x-31 solutions Answer 234318 by Fombitz(13828)   on 2010-07-30 14:55:39 (Show Source):
 Graphs/327151: determine the constant k so that (-2,3) will satisfy the equation kx-4y=-k1 solutions Answer 234313 by Fombitz(13828)   on 2010-07-30 13:59:33 (Show Source):
 Polynomials-and-rational-expressions/327153: (49m^2+7m)/(7m) 1 solutions Answer 234312 by Fombitz(13828)   on 2010-07-30 13:56:21 (Show Source):
 Probability-and-statistics/327037: Twelve \$5-bills, eight \$10-bills, and five \$20-bills are put into a bag and shaken up. You get to reach in and pull out two of the bills without looking. What is the probability you get a total of at least \$20? a 46% b 54% c 66 2/3% d 33 1/3% e 60% 1 solutions Answer 234303 by Fombitz(13828)   on 2010-07-30 13:32:11 (Show Source): You can put this solution on YOUR website!12 \$5, 8 \$10, 5 \$20=25 bills total . . . Remember for the second probability, the total number of bills is reduced by 1. 1. 2. 3. 4. 5. 6. 7. 8. 9. . . . If you add all of these probabilities together, you will get , since these outcomes represent all of the possible outcomes. . . . Now find, the ones that sum to at least \$20 and add up their probabilities. 3,5,6,7,8,9 all sum to at least \$20. Add up all of their probabilities or you could add 1,2, and 4 probabilities and subtract from 1. . . . P(>=\$20)= or 46%
 Polynomials-and-rational-expressions/327041: 25x^2- 144 Factor completely. Show all work necessary please i am having a hard time understanding 1 solutions Answer 234289 by Fombitz(13828)   on 2010-07-30 13:17:13 (Show Source): You can put this solution on YOUR website!THis is a difference of two squares. You factor it like this, In this case, . . . . Substituting,
 Polynomials-and-rational-expressions/327038: 6x^2 + 17x + 12 please answer the above question and show work please so i can see how it was done please1 solutions Answer 234287 by Fombitz(13828)   on 2010-07-30 13:15:38 (Show Source): You can put this solution on YOUR website!What's the question? You only provide an expression. What do you need done to it? Be specific.
 Parallelograms/327019: 1 solutions Answer 234286 by Fombitz(13828)   on 2010-07-30 13:14:21 (Show Source): You can put this solution on YOUR website!Please re-post.
 Equations/327099: list the three terms which complete the sequence and then classify as arithmitic, geometric or neither: 100,000 ,50,000 , 25,000 , ______,__________,_________1 solutions Answer 234285 by Fombitz(13828)   on 2010-07-30 13:13:39 (Show Source): You can put this solution on YOUR website!It's arithmetic. Subtract 25000 form the previous number to get the next number 100000 50000 25000 0 You do the next two.
 Linear-systems/327101: Which graph has the same intercepts as the equation: 18x - 24y = 72? 1 solutions Answer 234284 by Fombitz(13828)   on 2010-07-30 13:12:32 (Show Source): You can put this solution on YOUR website! Divide both sides by 6.
 Systems-of-equations/327104: solve this system of equations using the addition method -8x + 3y = -5 8x - 2y= 61 solutions Answer 234283 by Fombitz(13828)   on 2010-07-30 13:11:39 (Show Source): You can put this solution on YOUR website!Add the equations together to eliminate x, Then use either equation to solve for x.
 Probability-and-statistics/327124: Event A occurs with probabity 0.1. Event B occurs with probability 0.6. if A and B are independant, then : a- p(a and b)= 0.70 b- p(a or b)= 0.64 c- p(a and b)= 0.64 d- p(a or b)= 0.70 THE ANSWER IS 0.06.....BUT THE CHOICES ARE DIFFERENT SO HOW DO I ANSWER IT PLEAAAASE. 1 solutions Answer 234282 by Fombitz(13828)   on 2010-07-30 13:08:39 (Show Source): You can put this solution on YOUR website!The answer is 0.06 but the answer is not any of the choices. I'm confused. . . . They are independent P(A or B)= P(A and B)=P(A then B)=P(B then A)=
 Numbers_Word_Problems/327125: I can type 19 words in 38 seconds. How many can I type in 60 seconds1 solutions Answer 234281 by Fombitz(13828)   on 2010-07-30 13:03:58 (Show Source): You can put this solution on YOUR website!19 words is to 38 seconds as X words is to 60. 30 words in 60 seconds.
 Probability-and-statistics/327123: a roulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice and the outcome of the two spins are independant. the probability that it lands on red the first time and black the second time is: a- 0.2136 b- 0.2244 c- 0.2500 d- 0.5000 PLEASE HELP 1 solutions Answer 234280 by Fombitz(13828)   on 2010-07-30 13:03:09 (Show Source): You can put this solution on YOUR website!P(red)= P(black)= P(red then black)=
 logarithm/327063: Express as a sum, difference, and product of logarithms, without using exponents logb 4 square root of ((x^5b^9)/(y^7z^10)) a: 5/4 logb x+9-7logb y-10logb z b: 5/4 logb x+ 9/4-7/4 logb y-5/2 logb z c: 1/4 (logb x^5+logb b^9- logb y^7 +logb z^10) d: 5/4 logb x+9/4 -7/4 logb y+ 5/2 logb z1 solutions Answer 234264 by Fombitz(13828)   on 2010-07-30 11:03:49 (Show Source): You can put this solution on YOUR website! . . . . . .
 Exponents-negative-and-fractional/327056: (9x^9)^1/21 solutions Answer 234263 by Fombitz(13828)   on 2010-07-30 11:00:19 (Show Source):
 Proportions/327078: what is 16%of70?1 solutions Answer 234261 by Fombitz(13828)   on 2010-07-30 10:59:39 (Show Source): You can put this solution on YOUR website! Time for a calculator!
 Polynomials-and-rational-expressions/327080: Factor completely. 25m^2 - 80mn + 64n^2 1 solutions Answer 234260 by Fombitz(13828)   on 2010-07-30 10:58:33 (Show Source):
 Evaluation_Word_Problems/327090: (3x^5-4x^3+7x^2+4)+(3x^5+2x^3-3x)= -11x^4(10x^7+3x^6)= (x+7) (x-7)= 10x^4-30x^3-50x-20= y^4-8y^2-9= 25m^2-80mn+64n^2= x^2+2xy-143y^2=1 solutions Answer 234259 by Fombitz(13828)   on 2010-07-30 10:57:31 (Show Source): You can put this solution on YOUR website!Could you clarify your question? All the equations are running together. What are you looking for?
 Equations/327095: ``PLEASE HELP: find the 100th term and the nth term. 3,9,27,81,243....''. 1 solutions Answer 234258 by Fombitz(13828)   on 2010-07-30 10:56:22 (Show Source): You can put this solution on YOUR website! . . .
 Polynomials-and-rational-expressions/327014: can you help with the following problem and show steps please y^8y - 16y^51 solutions Answer 234257 by Fombitz(13828)   on 2010-07-30 10:54:53 (Show Source): You can put this solution on YOUR website!y^8 - 16y^5 Factor out common terms. The term in parenthese is the difference of two squares, The final term is also a difference of two squares,
 Miscellaneous_Word_Problems/327081: A bag contains 16 yellow marbles, 6 green marbles, and 7 red marbles. What is the chance of drawing a yellow marble? If a yellow marble is drawn the first time and then a secong marble is drawn without replacement, what is the probability of drawing a second yellow marble?1 solutions Answer 234256 by Fombitz(13828)   on 2010-07-30 10:51:48 (Show Source): You can put this solution on YOUR website!16 Yellow 6 Green 7 Red 29 Total . . 1. . . 2. Without replacement, the number of yellow marbles and total marbles drops by one, P(both yellow)=
 Polynomials-and-rational-expressions/327082: Solve by factoring and using the principle of zero products. x^2 + 6x = 0 1 solutions Answer 234254 by Fombitz(13828)   on 2010-07-30 10:41:45 (Show Source): You can put this solution on YOUR website! Two solutions: . . .