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 'checkley77'

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, >>Next

 Exponents-negative-and-fractional/145869: 3x^-21 solutions Answer 106461 by checkley77(12569)   on 2008-06-20 08:48:47 (Show Source): You can put this solution on YOUR website!3x^-2 3/x^2
 Exponents-negative-and-fractional/145793: 2(x^-5y^7)^-31 solutions Answer 106448 by checkley77(12569)   on 2008-06-19 22:24:08 (Show Source): You can put this solution on YOUR website!2(x^-5y^7)^-3 2(Y^7/X^5)^-3 2(X^5/Y^7)^3 2(X^15/Y^21)
 Geometry_Word_Problems/145846: The length of a rectangle is twice its width. If the perimeter of the rectangle is 30cm , find its area.1 solutions Answer 106443 by checkley77(12569)   on 2008-06-19 22:10:58 (Show Source): You can put this solution on YOUR website!2L+2W=30 L=2W 2(2W)+2W=30 4W+2W=30 6W=30 W=30/6 W=5 FOR THE WIDTH. L=2*5=10 FOR THE LENGTH PROOF: 2*5+2*10=30 30=30 5*10=50 FOR THE AREA.
 Human-and-algebraic-language/145799: This question is from textbook college algebra blitzer The length of a retangular pool is 6 meters less than twice the width. If the pools perimeter is 126 meters, what are its dimensions?1 solutions Answer 106409 by checkley77(12569)   on 2008-06-19 16:53:13 (Show Source): You can put this solution on YOUR website!L=2W-6 2L+2W=126 2(2W-6)+2W=126 4W-12+2W=126 6W=126+12 6W=138 W=138/6 W=23 M. FOR THE WIDTH L=2*23-6 L=46-6 L=40 M. FOR THE LENGTH. PROOF 2*40=2*23=126 80+46=126 126=126
 Linear-systems/145803: how do I do 2-y^2=01 solutions Answer 106408 by checkley77(12569)   on 2008-06-19 16:49:46 (Show Source): You can put this solution on YOUR website!2-y^2=0 subtract 2 -y^2=-2 multiply by -1 y^2=2 take the square root y=sqrt2 solve for sqrt2 y=1.414
 decimal-numbers/145779: Of the five numbers, 2.2,2.02,2.002,2.0202,2.00202, the one that is the least is: Help me best way to get answer easily. Thank you sri1 solutions Answer 106407 by checkley77(12569)   on 2008-06-19 16:44:51 (Show Source): You can put this solution on YOUR website!2.20000 now move the decimal point to the right 5 places. 2.02000 | 2.00200 | 2.02020 | 2.00202 | ------------------------------- 220,000 202,000 200,200 the smallest. 202,020 200,202
 Equations/145720: 140/3+2x/31 solutions Answer 106349 by checkley77(12569)   on 2008-06-18 19:04:37 (Show Source): You can put this solution on YOUR website!140/3+2x/3 (140+2x)/3
 Equations/145721: 1700+2x/3+140/3+2x/9=1 solutions Answer 106346 by checkley77(12569)   on 2008-06-18 19:01:38 (Show Source): You can put this solution on YOUR website!1700+2x/3+140/3+2x/9 2x/3+2x/9+140/3+1700 (3*2x+2x+3*140+9*1700)/9 (6x+2x+420+15,300)/9 (8x+15,720)/9
 Polynomials-and-rational-expressions/145608: Perform the indicated operations: (x^2-11x+4)-(-2x^2+2x-6)-(x2+6x-5)1 solutions Answer 106302 by checkley77(12569)   on 2008-06-18 09:48:56 (Show Source): You can put this solution on YOUR website!(x^2-11x+4)-(-2x^2+2x-6)-(x2+6x-5) x^2-11x+4+2x^2-2x+6-x^2-6x+5 2x^2-19x+15
 Exponents-negative-and-fractional/145609: -4x^3 * 2y^-2 * 5y^5 * x^-81 solutions Answer 106301 by checkley77(12569)   on 2008-06-18 09:45:15 (Show Source): You can put this solution on YOUR website!-4x^3*2y^-2*5y^5*x^-8 -4*2*5x^(3-8)^(-2+5) -40x^-5y^3
 Linear-systems/145663: Solve the ff. turn them to y form 1/3x=y+2 3x-2y+8=0 4x-10y=0 3/4x+2y=8 2/3y=-x/2-5/3x 1/2x+3/2x=2y+5-3y1 solutions Answer 106300 by checkley77(12569)   on 2008-06-18 09:07:18 (Show Source): You can put this solution on YOUR website!1/3x=y+2 y=x/3-2 ---------------------------- 3x-2y+8=0 -2y=-3x-8 y=-3x/-2-8/-2 y=3x/2+4 ----------------------------- 4x-10y=0 -10y=-4x y=-4x/-10 y=4x/10 y=2/5 --------------------------- 3/4x+2y=8 2y=-3x/4+8 y=-3x/8+8/2 y=-3x/8+4 --------------------------- I'll leave the rest for you to practice with.
 Signed-numbers/145666: 5+4(2-6)-10+3=1 solutions Answer 106299 by checkley77(12569)   on 2008-06-18 09:03:21 (Show Source): You can put this solution on YOUR website!5+4(2-6)-10+3 5+4(-4)-7 5-16-7 5-23 -18 answer.
 Linear-equations/145564: Complete the ordered pairs so that each is a solution for the given equation. 3x+4y=12 (0, ), ( ,3/4), ( ,0), (8/3, ) 1 solutions Answer 106226 by checkley77(12569)   on 2008-06-17 13:20:37 (Show Source): You can put this solution on YOUR website!3x+4y=12 (0,3), (3,3/4), (4,0), (8/3,1)
 Linear-equations/142812: - Determine how many solutions exist - Use either elimination or substitution to find the solutions (if any) - Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection y = 2x + 3 and y = -x – 4 1 solutions Answer 106224 by checkley77(12569)   on 2008-06-17 13:16:43 (Show Source): You can put this solution on YOUR website!y = 2x + 3 y = -x – 4 NOW SUBTRACT. ---------------------------- 0=3X+7 3X=-7 X=-7/3 ANSWER. Y=-(-7/3)-4 Y=7/3-4 Y=(7-12)/3 Y=-5/3 ANSWER. PROOF: -5/3=2*-7/3+3 -5/3=-14/3+3 -5/3=(-14+9)/3 -5/3=-5/3
 Human-and-algebraic-language/145572: Books and magazines. At Gwen’s garage sale, all books were one price, and all magazines were another price. Harriet bought four books and three magazines for \$1.45, and June bought two books and five magazines for \$1.25. What was the price of a book and what was the price of a magazine? 1 solutions Answer 106221 by checkley77(12569)   on 2008-06-17 13:06:01 (Show Source): You can put this solution on YOUR website!4B+3M=1.45 2B+5M=1.25 MULTIPLY BY -2 & ADD. -4B-10M=-2.50 4B+3M=1.45 --------------------- -7M=-1.05 M=-1.05/-7 M=.15 FOR EACH MAGAZINE. 4B+3*.15=1.45 4B+45=1.45 4B=1.45-.45 4B=1.00 B=.25 FOR EACH BOOK. PROOF 2*25+5*.15=1.25 .50+.75=1.25 1.25=1.25
 Rational-functions/145578: 1/2+7/y = 2+1/y A)y=3 B)y=4 C)y=-4 D)y=-31 solutions Answer 106219 by checkley77(12569)   on 2008-06-17 13:01:01 (Show Source): You can put this solution on YOUR website!1/2+7/y = 2+1/y 7/y-1/y=2-1/2 6/y=3/2 3y=12 y=12/3 y=4 answer. proof: 1/2+7/4=2+1/4 2/4+7/4=8/4+1/4 9/4=9/4
 Rational-functions/145579: (6r^2-7r-3/r^2-1)/ (4r^2-12r+9/r@-1) * (2r^2-r-3/3r^2-2r-1) A)(2r-3)^2/3r+1 B)r+1/r+1 C)r-1/r+1 D)11 solutions Answer 106218 by checkley77(12569)   on 2008-06-17 12:58:43 (Show Source): You can put this solution on YOUR website!(6r^2-7r-3/r^2-1)/ (4r^2-12r+9/r{@}-1) * (2r^2-r-3/3r^2-2r-1) I believe you have a mistake in your equation identified by the {} signs.
 Quadratic_Equations/145463: please subtract the following rational expressions x+2 6 --- - --- x-4 x-4 x^2 -1 --- - --- x-1 x-1 4x+y 2x-2y ---- - ----- 2x+3y 2x+3y -3 2-x --- - --- x-5 x-51 solutions Answer 106207 by checkley77(12569)   on 2008-06-17 08:56:41 (Show Source): You can put this solution on YOUR website!x+2 6 --- - --- x-4 x-4 (x+2-6)/(x-4) (x-4)/(x-4)=1 answer. -------------------------------------------- x^2 -1 --- - --- x-1 x-1 (x^2-1)/(x-1) (x+1)(x-1)/(x-1) (x+1/(x-1) answer. -------------------------------------------------- 4x+y 2x-2y ---- - ----- 2x+3y 2x+3y (4x+y-2x+2y)/(2x+3y) (2x+3y)/4x+3y) answer. ----------------------------------- -3 2-x --- - --- x-5 x-5 (-3-2+x)/(x-5) (x-5)/(x-5)=1 answer.
 Coordinate-system/145546: how will i plot and solve 2x-3y+6=01 solutions Answer 106206 by checkley77(12569)   on 2008-06-17 08:48:16 (Show Source): You can put this solution on YOUR website!2x-3y+6=0 -3y=-2x-6 y=-2x/-3-6/-3 y=2x/3+2 (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 2x/3 +2).
 Equations/145507: solve for y: 2/3y+k=j1 solutions Answer 106154 by checkley77(12569)   on 2008-06-16 17:37:20 (Show Source): You can put this solution on YOUR website!2/3y+k=j 2y/3+k=j 2y/3=j-k 2y=3(j-k) y=3/2(j-k)
 expressions/145487: I can't for the life of me get to the right answer here. Can you help? 2A/3=8+4A, solve for A1 solutions Answer 106151 by checkley77(12569)   on 2008-06-16 17:28:13 (Show Source): You can put this solution on YOUR website!2A/3=8+4A 2A=3(8+4A) 2A=24+12A 2A-12A=24 -10A=24 A=24/-2 A=-2.4 ANSWER. PROOF: 2*-2.4/3=8+4*-2.4 -4.8/3=8-9.6 -1.6=-1.6
 Exponents/145426: what is the answer to this question (-x2y5)(-3x4y7)1 solutions Answer 106122 by checkley77(12569)   on 2008-06-16 07:27:23 (Show Source): You can put this solution on YOUR website!-x2y5 -3x4y7 ---------------- 3x^6y^12
 Quadratic_Equations/145126: Plot the graphs of the following functions. f(x)=6x 1 solutions Answer 106073 by checkley77(12569)   on 2008-06-15 17:43:26 (Show Source): You can put this solution on YOUR website!f(x)=6x (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 6x).
 Graphs/145249: Tutors: Thank You Textbook Hall & Winn (5a^-4b^5)(-2a^2b^10) 1 solutions Answer 106072 by checkley77(12569)   on 2008-06-15 17:41:09 (Show Source): You can put this solution on YOUR website!(5a^-4b^5) (-2a^2b^10) -------------------------- -10a^(-2)b^(15)
 Expressions-with-variables/145393: solve each formula for the W variable if P=2L+2W1 solutions Answer 106071 by checkley77(12569)   on 2008-06-15 17:37:05 (Show Source): You can put this solution on YOUR website!P=2L+2W 2W=P-2L W=P/2-2L/2 W=P/2-L
 Linear_Equations_And_Systems_Word_Problems/145396: How to solve this word problem? 2 cars started off in the same direction at the same time, but the first car was going twice as fast as the second car. In 5 hrs, the first car was ahead of the second car by 275 miles. How fast was going the second car?1 solutions Answer 106070 by checkley77(12569)   on 2008-06-15 17:34:23 (Show Source): You can put this solution on YOUR website!5x=5(2x)-275 5x=10x-275 5x-10x=275 -5x=-275 x=-275/-5 x=55 mph for the slower/second car. proof: 5*55=10*55=-275 275=55-275 275=275
 Quadratic_Equations/145127: Plot the graphs of the following functions. f(x)=3x - 2 1 solutions Answer 105983 by checkley77(12569)   on 2008-06-14 17:29:41 (Show Source): You can put this solution on YOUR website!f(x)=3x-2 (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 3x -2).
 Quadratic_Equations/145128: Plot the graphs of the following functions. f(x)=(1/2)x1 solutions Answer 105982 by checkley77(12569)   on 2008-06-14 17:28:10 (Show Source): You can put this solution on YOUR website!f(x)=(1/2)x f(x)=x/2 (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, x/2).
 Travel_Word_Problems/145310: This question is from textbook Lois leaves at 8:00am traveling at 35 mph, traveling in the opposite direction,Clark leaves at 815 a.m. traveling at 40 mph. At what time will they be 140 miles apart1 solutions Answer 105981 by checkley77(12569)   on 2008-06-14 17:25:11 (Show Source): You can put this solution on YOUR website!35*x+40(x-.25)=140 35x+40x-10=140 75x=150 x=150/75 x=2 hour after Lois leaves they will be 140 miles apart. proof: 35*2+40(2-.25)=140 70+40*1.75=140 70+70=140 140=140
 Travel_Word_Problems/145312: This question is from textbook Lois leaves at 8:00am traveling at 35 mph, traveling in the opposite direction,Clark leaves at 815 a.m. traveling at 40 mph. At what time will they be 140 miles apart1 solutions Answer 105980 by checkley77(12569)   on 2008-06-14 17:23:58 (Show Source): You can put this solution on YOUR website!35*x+40(x-.25)=140 35x+40x-10=140 75x=150 x=150/75 x=2 hour after Lois leaves they will be 140 miles apart. proof: 35*2+40(2-.25)=140 70+40*1.75=140 70+70=140 140=140
 expressions/145198: [3(-4)+6].(-3)Please break it down step by step in order of operations thanks1 solutions Answer 105907 by checkley77(12569)   on 2008-06-13 20:22:47 (Show Source): You can put this solution on YOUR website![3(-4)+6].(-3) [-12+6]*-3 [-6](-3) 18 answer