Tutor:

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

---

Recent problems solved by 'edjones'

edjones answered: 7568 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, >>Next

Volume/350328: A volume of 0.3 liter of alcohol is how many milliliters? 1 solutions Answer 250433 by edjones(7569)   on 2010-09-30 17:39:37 (Show Source): You can put this solution on YOUR website! 300 ml

Volume/350327: A distance of 6 km is how many meters? 1 solutions Answer 250430 by edjones(7569)   on 2010-09-30 17:37:37 (Show Source): You can put this solution on YOUR website! 6,000 m

Expressions-with-variables/350325: oops messed up on last problem here it is again sorryy i hav tried this problem but i cant figure it out i got 0 = 1 idk if its no solution or what 11+3x-7=6x+5-3x 1 solutions Answer 250428 by edjones(7569)   on 2010-09-30 17:37:00 (Show Source): You can put this solution on YOUR website! There is no answer. You did it correctly. . Ed

Graphs/350316: 7y-10<6y-9 1 solutions Answer 250426 by edjones(7569)   on 2010-09-30 17:34:47 (Show Source): You can put this solution on YOUR website! 7y-10<6y-9 y<1

Numeric_Fractions/350302: what is 3-1/2 divided by 2-4/5 in simplest form 1 solutions Answer 250423 by edjones(7569)   on 2010-09-30 17:33:03 (Show Source): You can put this solution on YOUR website! (3 - 1/2) / (2 - 4/5) = 2 1/2 / 1 1/5 = 5/2 / 6/5 = 5/2 * 5/6 = 25/12 . Ed

Polynomials-and-rational-expressions/350312: Find a polynomial with integer coefficients that satisfies the given conditions. Q(X) has degree 3 and zeros −7 and 1 + i. 1 solutions Answer 250417 by edjones(7569)   on 2010-09-30 17:25:38 (Show Source): You can put this solution on YOUR website! x=-7, x=1+i, x=1-i (x+7)(x-1-i)(x-1+i) =x^3+5x^2-12x+14 . Ed

Numeric_Fractions/350314: astros have 104 hits in 325 times at bat diamondbacks have 88 hits in 275 times at bat do they have the same batting average? 1 solutions Answer 250414 by edjones(7569)   on 2010-09-30 17:20:06 (Show Source): You can put this solution on YOUR website! 104/325=.320 88/275=.320 . Yes . Ed

Quadratic_Equations/350311: Please show your work in order for me to understand problems, thank you... 1. x^2 + 11x + 24=0 Solve and show work 2. 3x^2 + 8x + 5 Factor and show work 3. (15 (21/(5 (7 Simplify radical notation Thanks again. 1 solutions Answer 250413 by edjones(7569)   on 2010-09-30 17:17:12 (Show Source): You can put this solution on YOUR website! 1. x^2+11x+24=0 (x+8)(x+3)=0 x=-8, x=-3 . Ed

Rectangles/350199: A rectangle of has an area of 48 and a perimeter of 32. Find the dimensions of the rectangle. 1 solutions Answer 250412 by edjones(7569)   on 2010-09-30 17:14:19 (Show Source): You can put this solution on YOUR website! Lw=48 2L+2w=32 . L+w=16 L=16-w w(16-w)=48 16w-w^2=48 w^2-16w+48=0 (w-12)(w-4)=0 w=4, L=12 . Ed

Expressions-with-variables/350305: I tried this problem but i dont know if its right. 11+3x-7=6x=5-3x and i got 0= 1 idk no soution ??? 1 solutions Answer 250409 by edjones(7569)   on 2010-09-30 17:08:22 (Show Source): You can put this solution on YOUR website! why do you have 2 equal signs?

Word_Problems_With_Coins/350299: I have 40 dimes and nickels that equal $2.90. How many nickels do I have? 1 solutions Answer 250407 by edjones(7569)   on 2010-09-30 17:05:18 (Show Source): You can put this solution on YOUR website! Let n=number of nickels and d=number of dimes. n+d=40 5n+10d=290 . n=40-d .05(40-d)+.10d=2.90 2-.05d+.10d=2.90 2+.05d=2.90 .05d=.90 d=18 n=22 . Ed

Human-and-algebraic-language/350279: the greater of two numbers is one more than twice the smaller. three times the greater exceeds 5 times the smaller by 10. Find the numbers. 1 solutions Answer 250404 by edjones(7569)   on 2010-09-30 16:53:20 (Show Source): You can put this solution on YOUR website! Let x=greater, y=lesser x=2y+1 3x=5y+10 . 3(2y+1)=5y+10 6y+3=5y+10 y=7 x=15 . Ed

Equations/350298: joan says that is you evaluate 6z for z = 7, the answer is 67. Is she correct? If not, tell why and then explain how you would evaluate the expression. 1 solutions Answer 250401 by edjones(7569)   on 2010-09-30 16:48:02 (Show Source): You can put this solution on YOUR website! (3y+1)(-2)+y =-6y-2+y -5y-2

real-numbers/350297: My question is on Distributive Property: (3y+1)(-2)+y. How do I solve? 1 solutions Answer 250399 by edjones(7569)   on 2010-09-30 16:45:48 (Show Source): You can put this solution on YOUR website! (3y+1)(-2)+y =-6y-2+y -5y-2 . Ed

expressions/350288: 3(7x+2)-2(3x+8) 1 solutions Answer 250398 by edjones(7569)   on 2010-09-30 16:43:25 (Show Source): You can put this solution on YOUR website! 3(7x+2)-2(3x+8) =21x+6-6x-16 =15x-10 . Ed

Equations/350253: 4-7w=12-3w 1 solutions Answer 250396 by edjones(7569)   on 2010-09-30 16:41:01 (Show Source): You can put this solution on YOUR website! 4-7w=12-3w -4w=8 w=-2 . Ed

Triangles/350293: It has been 22 years since my last math class, now i am in college math 1. I am as lost as a First grader in a calculus class. Factor 4xsqaured -8x completely Can i get some help please, I am soo lost 1 solutions Answer 250394 by edjones(7569)   on 2010-09-30 16:38:12 (Show Source): You can put this solution on YOUR website! 4x^2-8x =4x(x-2)

Expressions-with-variables/350290: how do you do 2.85y-7=12.85y-2 step by step 1 solutions Answer 250392 by edjones(7569)   on 2010-09-30 16:36:40 (Show Source): You can put this solution on YOUR website! 2.85y-7=12.85y-2 -10y=5 y=-1/2 . Ed

Probability-and-statistics/350275: Statistic: Counting and Multiplication Principle here is my problem! 1) seven shoppers arrive simultaneously at the express lane checkstand of a local supermarket. If the shoppers line up at random, what's the probability they end up in the alphabetical order of their names? 2)Suppose 6 notes were written and 6 envelopes were addressed. Accidentally, the notes were inserted into the envelopes at random and then mailed. What is the probability all the notes arrive at the correct destination? 3) Four people get on a bus that makes six regular stops. Find the probability that at least two of the people get off the bus at the same stop? 1 solutions Answer 250389 by edjones(7569)   on 2010-09-30 16:32:44 (Show Source): You can put this solution on YOUR website! 1) 1/7!=1/5040

Functions/350282: What's the domain of f(x)=the square root 5x-30 1 solutions Answer 250386 by edjones(7569)   on 2010-09-30 16:29:46 (Show Source): You can put this solution on YOUR website! sqrt(5x-30) 5x-30 cannot be less than 0 5x-30>=0 5x>=30 x>=6 the domain. . Ed

Equations/350286: 5-(x+4)= -5 1 solutions Answer 250383 by edjones(7569)   on 2010-09-30 16:25:47 (Show Source): You can put this solution on YOUR website! 5-(x+4)= -5 5-x-4=-5 1-x=-5 -x=-6 x=6 . Ed

Miscellaneous_Word_Problems/350280: Find the dimensions of a rectangle with a perimeter of 126 feet and length and width ratio of 5:8 1 solutions Answer 250380 by edjones(7569)   on 2010-09-30 16:23:20 (Show Source): You can put this solution on YOUR website! let one side=5x the other 8x. 2L+2w=P 2*5x+2*8x=126 10x+16x=126 26x=126 x=4.846 5x=24.23' 8x=38.77' . Ed

Radicals/350278: radical 15 times radical 6 1 solutions Answer 250375 by edjones(7569)   on 2010-09-30 16:13:34 (Show Source): You can put this solution on YOUR website! sqrt(15)*sqrt(6) =sqrt(90) =sqrt(9*10) =3sqrt(10) . Ed

Quadratic_Equations/350272: please help me solve the equation 3(4x+2)+5x=30-x 1 solutions Answer 250374 by edjones(7569)   on 2010-09-30 16:10:30 (Show Source): You can put this solution on YOUR website! 3(4x+2)+5x=30-x 12x+6+5x=30-x 17x+6=30-x 18x=24 x=24/18=4/3 . Ed

Triangles/350265: A triangle has height 4 ft and area 32 ft squared. What is the length? 1 solutions Answer 250367 by edjones(7569)   on 2010-09-30 15:58:51 (Show Source): You can put this solution on YOUR website! h=4, A=32 .5*4*b=32 2b=32 b=16' . Ed

Proportions/350188: Solve each proportion and then check. x+10/x-6= x/x+4 HELP ME PLEASE!! :) 1 solutions Answer 250309 by edjones(7569)   on 2010-09-30 13:12:08 (Show Source): You can put this solution on YOUR website! (x+10)/(x-6)= x/(x+4) I am guessing that this is the problem. Help tutors. Use parentheses! (x+10)(x+4)=x(x-6) multiply each side by (x-6)(x+4) x^2+14x+40=x^2-6x 20x+40=0 20x=-40 x=-2 . Ed

Quadratic_Equations/350196: i have been working on this problem for an hour and cannot seem to figure it out. Thank you ∛(y^10 )×∛(y^11 ) multipy and simplify 1 solutions Answer 250306 by edjones(7569)   on 2010-09-30 13:04:19 (Show Source): You can put this solution on YOUR website! ∛(y^10 )×∛(y^11 ) = . Ed

Rational-functions/350184: please check my equation, let me know if I have any mistakes thank you 9(y+1)-3y=2(3y+1)-8 9y+9-3y=6y+2-8 6y+9=6y-6 -9 -9 6y =6y-15 1 solutions Answer 250302 by edjones(7569)   on 2010-09-30 12:57:24 (Show Source): You can put this solution on YOUR website! correct there is no answer. . Ed

Probability-and-statistics/350181: Only 4% of people have Type AB blood. A bloodmobile has 12 vials of blood on a rack. If the dis- tribution of blood types at this location is consistent with the general population, what’s the probability they find AB blood in: a) None of the 12 samples? b) At least 2 samples? c) 3 or 4 samples? 1 solutions Answer 250298 by edjones(7569)   on 2010-09-30 12:49:27 (Show Source): You can put this solution on YOUR website! Let x=.04 and y=.96 expand (x+y)^12 . a) y^12=.6127 . b) 12xy^11+y^12=.9191 1-.9191=.0809 . c) 12C3=220, 12C4=495 220x^3y^9+495x^4y^8=.0106 . Ed

Polynomials-and-rational-expressions/350177: I think I know this but not 100% sure. Find the value of x: x-5 over x-6 = 1 over x-6 1 solutions Answer 250293 by edjones(7569)   on 2010-09-30 12:11:53 (Show Source): You can put this solution on YOUR website! (x-5)/(x-6)=1/(x-6) x-5=1 multiply each side by x-6 x=6 but x cannot equal 6 because there would be division by zero in the denominator. The equation has no answer. x is undefined. . Ed

Quadratic_Equations/350159: in a right triangle find the length of the side not given b=2 c=squareroot of 13 1 solutions Answer 250292 by edjones(7569)   on 2010-09-30 12:05:48 (Show Source): You can put this solution on YOUR website! a^2+b^2=c^2 a^2+2^2=sqrt(13)^2 a^2+4=13 a^2=9 a=3 . Ed