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

 Numbers_Word_Problems/242183: One week a business sold 40 scarves. White ones cost \$4.95, and printed ones cost \$7.95. In all, total sales of scarves were \$282. How many of each kind were sold?1 solutions Answer 177296 by checkley77(12569)   on 2009-11-23 18:59:52 (Show Source): You can put this solution on YOUR website!P+W=40 OR P=40-W 4.95W+7.95(40-W)=282 4.95W+318-7.95W=282 -3W=282-318 -3W=-36 W=-36/3 W=12 WHITE SCARVES WERE SOLD. 40-12=28 PRINTED SCARVES WERE SOLD. PROOF: 4.95*12+7.95*28=282 59.4+222.6=182 282=282
 Polynomials-and-rational-expressions/242186: How would you solve this problem: Perform the indicated Operation. (x-7)(3x-4)1 solutions Answer 177293 by checkley77(12569)   on 2009-11-23 18:52:00 (Show Source): You can put this solution on YOUR website!(x-7) (3x-4) -------------- 3x^3-21x-4x+28 3x^2-25x+28 ans.
 Square-cubic-other-roots/242165: 6x^2+10x=-11 solutions Answer 177292 by checkley77(12569)   on 2009-11-23 18:48:33 (Show Source): You can put this solution on YOUR website!6x^2+10x=-1 6x^2+10x+1=0 x=(-10+-sqrt[10^2-4*6*1])/2*6 x=(-10+-sqrt[100-24)/12 x=(-10+-sqrt76)/12 x=(-10+-8.718)/12 x=(-10+8.718)/12 x=-1.28/12 x=-.107 ans. x=(-10-8.718)/12 x=-18.718/12 x=-1.56 ans.
 Linear-equations/242067: Graph the line that goes through point (-5,5)with slope 1/51 solutions Answer 177287 by checkley77(12569)   on 2009-11-23 18:36:12 (Show Source): You can put this solution on YOUR website!(-5,5)with slope 1/5 Y=mX+b 5=1/5*-5+b 5=-5/5+b 5=-1+b b=5+1 b=6 Y=X/5+6 (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, x/5 +6).
 Expressions-with-variables/242078: how do you solve something like this 1/2 b+4=1/8 b+88?1 solutions Answer 177281 by checkley77(12569)   on 2009-11-23 18:22:24 (Show Source): You can put this solution on YOUR website!1/2b+4=1/8b+88 b/2+4=b/8+88 b/2-b/8=88-4 (4b-b)/8=84 3b/8=84 3b=84*8 3b=672 b=672/3 b=224 ans. Proof: 224/2+4=224/8+88 112+4=28+88 116=116
 Linear_Equations_And_Systems_Word_Problems/242080: the measure of the largest angle of a triangle is 45 degrees moe than the measure of the smallest angle. The middle angle measures 65 degrees. What are the measures of the largest and smallest angles?1 solutions Answer 177279 by checkley77(12569)   on 2009-11-23 18:20:39 (Show Source): You can put this solution on YOUR website!x+45+65=180 x=180-45-65 x=70 degrees for the missing angle. Proof: 70+45+65=180 180=180
 Radicals/242084: Please help me solve the following equation. 1 solutions Answer 177278 by checkley77(12569)   on 2009-11-23 18:17:13 (Show Source): You can put this solution on YOUR website! sqrt(3x-5)=x-3 square both sides 3x-5=(x-3)^2 3x-5=x^2-6x+9 x^2-6x-3x+9+5=0 x^2-9x+14=0 (x-7)(x-2)=0 x-7=0 x=7 ans. x-2=0 x=2 ans.
 Expressions-with-variables/242092: 1/2b+4=1/8b+88. how do you do these one? cause is irritating me.1 solutions Answer 177276 by checkley77(12569)   on 2009-11-23 18:10:29 (Show Source): You can put this solution on YOUR website!1/2b+4=1/8b+88 b/2+4=b/8+88 b/2-b/8=88-4 (4b-b)/8=84 3b/8=84 3b=84*8 3b=672 b=672/3 b=224 ans. Proof: 224/2+4=224/8+88 112+4=28+88 116=116
 Numeric_Fractions/242099: -(-4x+5y-18z)1 solutions Answer 177274 by checkley77(12569)   on 2009-11-23 18:06:37 (Show Source): You can put this solution on YOUR website!-(-4x+5y-18z) 4x-5y+18z ans.
 test/242102: how can you factor a trinomial such as (3x^2)- 14x + 61 solutions Answer 177273 by checkley77(12569)   on 2009-11-23 18:05:21 (Show Source): You can put this solution on YOUR website!(3x^2)- 14x + 6 3X^2-14X+6 x=(14+-sqrt[-14^2-4*3*6})/2*3 x=(14+-sqrt[196-72])/6 x=(14+-sqrt124)/6 x=(-14+-11.1355)/6 x=(-14+11/1355)/6 x=-2.8645/6 x=-.477 ans. x=(-14-11.1355)/6 x=-25.1355/6 x=4.189 ans.
 Numbers_Word_Problems/242104: The sum of two numbers is 50. If twice the larger is subtracted from four times the smaller, the result is 8. Find the numbers.1 solutions Answer 177266 by checkley77(12569)   on 2009-11-23 17:50:54 (Show Source): You can put this solution on YOUR website!X+Y=50 OR X=50-Y 4X-2Y=8 4(50-Y)-2Y=8 200-4Y-2Y=8 -6Y=8-200 -6Y=-192 Y=-192/-6 Y=32 ANS. X+32=50 X=50-32 X=18 ANS. PROOF: 4*18-2*32=8 72-64=8 8=8
 Rectangles/242105: the width of a rectangle is one-half of the length. if the width is 6 meters, what is the length 1 solutions Answer 177262 by checkley77(12569)   on 2009-11-23 17:46:44 (Show Source): You can put this solution on YOUR website!W=L/2 6=L/2 L=2*6 L=12 ANS.
 Graphs/242109: Find an equation of the line having the given slope and containing the given point: m=8/9,(2,-2)1 solutions Answer 177261 by checkley77(12569)   on 2009-11-23 17:44:58 (Show Source): You can put this solution on YOUR website!m=8/9,(2,-2) -2=8/9*2+b -2=16/9+b b=-2-16/9 b=(-2*9-16)/9 b=(-18-16)/9 b=-34/9 the y intercept. Y=8x/9-34/9 (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 8x/9 -34/9).
 Surface-area/242134: I have a word problem as states Sara has a favorite print whose length is 3 inches longer than twice the width. If the area is 90 square inches find its dimensions? 1 solutions Answer 177259 by checkley77(12569)   on 2009-11-23 17:39:38 (Show Source): You can put this solution on YOUR website!L=2W+3 LW=90 (2W+3)W=90 2W^2+3W-90=0 (2W+15)(W-6)=0 W-6=0 W=6 ANS. FOR THE WIDTH. L=2*6+3 L=12+3=15 ANS. FOR THE LENGTH. PROOF: 6*15=90 90=90
 Rectangles/242137: If You Have 45 inches of fencing to use.what dimensions would give her the most area. just to let you know the perimeter equals 45 not the area 1 solutions Answer 177257 by checkley77(12569)   on 2009-11-23 17:33:35 (Show Source): You can put this solution on YOUR website!45/4=11.25 would be the length of each of the 4 sides of this square. 11.25*11.25=126.5625 in^2 is the max. area. Proof: Try 11.2*11.3=126.56
 Linear-equations/242127: How would you graph the equation, y=3x-2 and identify the y intercept?1 solutions Answer 177254 by checkley77(12569)   on 2009-11-23 17:27:17 (Show Source): You can put this solution on YOUR website!y=3x-2 (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 3x -2). Y intercept=-2
 Quadratic_Equations/242128: how to factor -4.9x^2+24x+2=01 solutions Answer 177253 by checkley77(12569)   on 2009-11-23 17:25:11 (Show Source): You can put this solution on YOUR website!-4.9x^2+24x+2=0 x=(-24+-sqrt[24^2-4*-4.9*2])/2*-4.9 x=(-24+-sqrt[576+39.2])/-9.8 x=(-24+-sqrt[615.2)/-9.8 x=(-24+-24.8)/-9.8 x=(-24+24.8)/-9.8 x=.8/-9.8 x=-.08 ans. x=(-24-24.8)/-9.8 x=-48.8/-9.8 x=4.98 ans.
 Rectangles/242129: The perimeter of a rectangle is 18 feet, and the area of the rectangle is 20 square feet. What is the length of the rectangle?1 solutions Answer 177251 by checkley77(12569)   on 2009-11-23 17:17:52 (Show Source): You can put this solution on YOUR website!xy=20 x=20/y 2x+2y=18 replace x with (20/y) & solve for y. 2(20/y)+2y=18 40/y+2y=18 (40+2y*y)/y=18 40+2y^2=18y 2y^2+40=18y 2y^2-18y+40=0 2(y^2-9y+20)=0 (y-5)(y-4)=0 y-5=0 y=5 ans. y-4=0 y=4 ans x=20/5=4 ans x=20/4=5 ans. Proof: 4*5=20 2*4+2*5=18 8+10=18 18=18
 Numeric_Fractions/242113: We tried to solve this type of problem.....thought we were correct, however the teacher said otherwise. Of course she said we could "re-do" the incorrect problems, but she gave no further explanation. Use prime factors to simplify each expression. 4 4/15 + 2 4/39=1 solutions Answer 177246 by checkley77(12569)   on 2009-11-23 17:08:41 (Show Source): You can put this solution on YOUR website!4 4/15 + 2 4/39 (4*15+4)/15+(2*39+4)/39 chNge to improper fractions. (60+4)/15+(78+4)/39 64/15+82/39 find common denominator & combine. (64*39+82*15)/15*39 (2,496+1,230)/585 3,726/585 reduce divide by 9/9. 414/65 ans.
 Miscellaneous_Word_Problems/242118: Can you please help me?!?!? Thanks sooo much:) The state of alabama is about 335 miles long and 210 miles wide. what scale would you use to draw a map of alabama on 8 1/2"x11" paper to make the map as large as possible? THANK YOU!1 solutions Answer 177241 by checkley77(12569)   on 2009-11-23 16:57:16 (Show Source): You can put this solution on YOUR website!335/11=30.45 210/8.5=24.7 A 30.5:1 scale is the largest you could use. Proof: 335/30.5=10.98 inches. 210/30.5=6.88 inches. The resultant map would be 6.88 by 10.98 inches.
 Proportions/242121: OK i need help with this question just on how to set it up- A man combines 7 fl oz of oil with 4 fl oz of vinegar. One day he needed a larger amount, so he used 8 fl oz of oil. How much vinegar did he need? please show me how to set it up into a proportion!!!1 solutions Answer 177236 by checkley77(12569)   on 2009-11-23 16:50:37 (Show Source): You can put this solution on YOUR website!7/4=8/x cross multiply. 7x=4*8 7x=32 x=32/7 x=4.57 oz. of vinegar are needed.
 Graphs/242120: how can i find the intersection points of y-3=x^2-4x and y=x-1.1 solutions Answer 177234 by checkley77(12569)   on 2009-11-23 16:48:12 (Show Source): You can put this solution on YOUR website!y-3=x^2-4x and y=x-1. Graphing is the way to find the intersection points. y-3=x^2-4x y=x^2-4x+3 (red curve) y=x-1 (green line) (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions x -1 and x^2 -4x +3). Intercepts are (1,0) & (4,3)
 Mixture_Word_Problems/242116: I need to know the method of finding the answer the following problem. Jim can fill a pool carrying buckets of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1 1/2 hours. How quickly can all three fill the pool together?1 solutions Answer 177232 by checkley77(12569)   on 2009-11-23 16:41:40 (Show Source): You can put this solution on YOUR website!x/30+x/45+x/90=1 (3x+2x+1x)/90=1 6x/90=1 6x=90 x=15 min. to fill the pool when they work together.
 Graphs/241917: grapgh the equation and identify the y-intercept. y=-3/2x-41 solutions Answer 177168 by checkley77(12569)   on 2009-11-23 10:33:02 (Show Source): You can put this solution on YOUR website!y=-3/2x-4 (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, -3x/2 -4). The y intercept=-4
 Linear-systems/241984: 3(x-3)+4(x+1)= -121 solutions Answer 177164 by checkley77(12569)   on 2009-11-23 10:27:41 (Show Source): You can put this solution on YOUR website!3(x-3)+4(x+1)= -12 3X-9+4X+4=-12 7X=-12+9-4 7X=-7 X=-7/7 X=-1 ANS. PROOF: 3(-1-3)+4(-1+1)=12 3*-4+0=-12 -12=-12
 Linear-systems/241927: 3x+2y+14, 2x+2y=16 then y=101 solutions Answer 177162 by checkley77(12569)   on 2009-11-23 10:22:55 (Show Source): You can put this solution on YOUR website!3x+2y+14 2Y=-3X+14 Y=-3X/2+14/2 Y=-3X/2+7 (RED LINE) 2x+2y=16 2Y=-2X+16 Y=-2X/2+16/2 Y=-X+8 (GREEN LINE) (graph 300x200 pixels, x from -6 to 5, y from -10 to 12, of TWO functions -3x/2 +7 and -x +8). -3X/2+7=-X+8 -3X/2+X=8-7 (-3X+2X)/2=1 -X/2=1 -X=2 X=-2 Y=-(-2)+8 Y=10 ANSWER.
 Functions/241977: Find f(-2) when f(x)=x2+4x-6. The x is squared.1 solutions Answer 177157 by checkley77(12569)   on 2009-11-23 09:58:52 (Show Source): You can put this solution on YOUR website!f(x)=x^2+4x-6. F(-2)=(-2)^2+4*-2-6 F(-2)=4-8-6 F(-2)=-10 ANS.
 Linear_Equations_And_Systems_Word_Problems/241980: The length of a rectangle is 5 cm more than its width. If its perimeter is 58 cm,calculate its dimension.1 solutions Answer 177151 by checkley77(12569)   on 2009-11-23 09:50:12 (Show Source): You can put this solution on YOUR website!L=W+5 2L+2W=58 2(W+5)+2W=58 2W+10+2W=58 4W=58-10 4W=48 W=48/4 W=12 ANS. FOR THE WIDTH. L=12+5=17 ANS. FOR THE LENGTH. PROOF: 2*17+2*12=58 34+24=58 58=58
 Functions/241978: Find the slope of the line and sketch the graph. 2x+3y=131 solutions Answer 177148 by checkley77(12569)   on 2009-11-23 09:46:46 (Show Source): You can put this solution on YOUR website!2x+3y=13 3Y=-2X+13 Y=-2X/3+13/3 THE SLOPE=-2/3 (graph 300x200 pixels, x from -6 to 10, y from -10 to 10, -2x/3 +13/3).
 Number-Line/241973: on the number line what is half way between 2/3 and 3/4? a) 5/14 b) 7/12 c) 13/18 d) 17/24 e)8/91 solutions Answer 177146 by checkley77(12569)   on 2009-11-23 09:37:14 (Show Source): You can put this solution on YOUR website!(3/4-2/3)/2 [(3*3-2*4)/12]/2 [(9-8)/12]*1/2 1/12*1/2 1/24 IS HALF THE DISTANCE BETWEEN THESE 2 POINTS. 3/4-1/24 (3*6-1)/24 (18-1)/24 17/24 ANSWER D).
 Money_Word_Problems/241975: The owner of Mike`s Coffeehouse found that on one day the number of orders for tea was 1/3 the number of orders for coffee. If the total number of orders for the two drinks was 76, how many orders were placed for tea?1 solutions Answer 177145 by checkley77(12569)   on 2009-11-23 09:28:56 (Show Source): You can put this solution on YOUR website!T=C/3 T+C=76 C/3+C=76 (C+3C)/3=76 4C/3=76 4C=3*76 4C=228 C=228/4 C=57 CUPS OF COFFEE. T=57/3=19 CUPS OF TEE.