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 'checkley71'

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, >>Next

 Evaluation_Word_Problems/53809: I bought 2 donuts and 3 lattes yesterday for \$6.15, today I bought 3donuts and 4 lattes for \$8.35, how much are donuts and how much are lattes? I got latte would be 1.75 donuts .45 am i right?1 solutions Answer 36069 by checkley71(8403)   on 2006-09-27 17:42:26 (Show Source): You can put this solution on YOUR website!2D+3L=6.15 & 3D+4L=8.35 MULTIPLYING EQ #1 BY 3 & MULT EQ #2 BY -2 WE GET 6D+9L=18.45 -6D-8L=-16.70 NOW ADDING THESE TWO EQUATIONS WE GET ------------------------ 0D+L=1.75 OR THE PRICE OF A LATTE IS 1.75 & THE PRICE OF THE DONUT IS 2D+3*1.75=6.15 OR 2D=6.15-5.25 OR 2D=.90 OR D=.90/2 OR D=.45 THE PRICE OF A DONUT PROOF 3*.45+4*1.75=8.35 OR 1.35+7.00=8.35 OR 8.35=8.35
 Equations/53810: check whether the given number is a solution of the equation: 13+x=9;-41 solutions Answer 36067 by checkley71(8403)   on 2006-09-27 17:30:56 (Show Source): You can put this solution on YOUR website!13+X=9 OR 12-4=9 OR 9=9
 Polynomials-and-rational-expressions/53834: can u show me how to do this problem? (2x^2+5xy+4y^2)+(-xy-6x^2+2y^2)1 solutions Answer 36066 by checkley71(8403)   on 2006-09-27 17:29:10 (Show Source): You can put this solution on YOUR website!2X^2+5XY+4Y^2 PLUS -6X^2-XY+2Y^2 ---------------------------- -4X^2+4XY+6Y^2
 Equations/53812: simplify first and then solve the equation: x-(-6)=-41 solutions Answer 36065 by checkley71(8403)   on 2006-09-27 17:25:14 (Show Source): You can put this solution on YOUR website!X-(-6)=-4 OR X+6=-4 OR X=-6-4 OR X=-10 PROOF -10-(-6)=-4 OR -10+6=-4 OR -4=-4
 Equations/53815: solve the equation: -10=-6+x1 solutions Answer 36064 by checkley71(8403)   on 2006-09-27 17:22:37 (Show Source): You can put this solution on YOUR website!-10=-6+X OR -10+6=X OR -4=X PROOF -10=-6-4 OR OR -10=-10
 Linear-equations/53818: Write the equation of the line with given slope and y intercept. Then graph each line using the slope and y intercept. McGraw Hill 6th edition. 7.1 problem #22. Thanks so very much for your help!! Slope: 2/3; y-intercept: (0,-2) 1 solutions Answer 36063 by checkley71(8403)   on 2006-09-27 17:20:31 (Show Source): You can put this solution on YOUR website!Y=2/3X-2
 Equations/53826: 2x=7x+101 solutions Answer 36062 by checkley71(8403)   on 2006-09-27 17:18:48 (Show Source): You can put this solution on YOUR website!2X=7X+10 OR 2X-7X=10 OR -5X=10 OR X=-10/5 OR X=-2 PROOF 2*-2=7*-2+10 OR -4=-14+10 OR -4=-4
 Volume/53833: A room requires the ventilation system to produce 8 air exchanges per hour. This means that every hour the ventilation system must move a volume of air equal to 8 times the volume of the room. The area of the rectangular floor of the room is x square feet. The rectangular walls are 10 feet high. In terms of x, how many cubic feet of air must the ventilation syastem move per hour. ( I am a Mom trying to help my child with a practice SAT. I can't figure this out!)1 solutions Answer 36061 by checkley71(8403)   on 2006-09-27 17:14:37 (Show Source): You can put this solution on YOUR website!IF THE AREA OF THE FLOOR IS X SQUARE FEET (X^2) & THE WALLS ARE 10 FEET HIGH THEN THE VOLUME OF THE ROOM IS X^2 FEET*10 FEET OR 10X^3 FEET THUS 8*10X^3=80X^3 (80 CUBIC FEET) OF AIR MUST BE REMOVED PER HOUR. THE 80X^3 FEET IS READ 80X CUBIC FEET. THAT'S THE VOLUME OF THE ROOM (10^3 FEET) TIMES 8
 Travel_Word_Problems/53750: If a car is driving a 1/4 mile oval track and completes the 1/4 mile in 10 seconds, how fast is the car driving. My answer is 80 mph, is it correct?1 solutions Answer 35990 by checkley71(8403)   on 2006-09-26 23:02:19 (Show Source): You can put this solution on YOUR website!.25 MILES IN 10 SECONDS IS THE SAME AS 3600/10=X/.25 OR 10X=900 OR X=90 MPH.
 Expressions-with-variables/53759: Celia bought 12 apples. She ate two of them. She sold the remaining apples for 20 cents more than she bought each of them. She profited \$1.00. How much did she sell the apples for?1 solutions Answer 35989 by checkley71(8403)   on 2006-09-26 22:55:45 (Show Source): You can put this solution on YOUR website!10(X+.20)=12X+1 OR 10X+2=12X+1 OR 2X=1 OR X=.50 PROOF 10(.50+.20)=12*.5+1 OR 10(.70)=6+1 OR 7=7 SHE SOLD THE APPLES FOR 70 CENTS.
 Complex_Numbers/53760: This question is from textbook A total of 720 people attended the school basketball game. Adult tickets cost \$2.50 each and student tickets cost \$1.50 each. If \$1220 worth of tickets were sold how many students and how many adults attended?1 solutions Answer 35988 by checkley71(8403)   on 2006-09-26 22:50:31 (Show Source): You can put this solution on YOUR website!A+S=720 THEN A=720-S & 2.50A+1.50S=1220 OR SUBSTITUTING 720-S FOR A WE GET 2.50(720-S)+1.50S=1220 OR 1800-2.50S+1.50S=1220 OR -S=-580 OR S=580 STUDENT TICKETS SOLD. THEN THERE ARE 720-580=140 ADULT TICKETS SOLD. PROOF 2.50*140+1.50*580=1220 OR 350+870=1220 OR 1220=1220
 Linear-systems/53762: I have the following problem to solve and cannot figure it out. Please Help!!! Solve. 3(x-2)-2x = x-61 solutions Answer 35987 by checkley71(8403)   on 2006-09-26 22:44:28 (Show Source): You can put this solution on YOUR website!3(x-2)-2x=x-6 or 3x-6-2x=x-6 or 3x-2x-x=6-6 or 0=0
 Money_Word_Problems/53648: PLEASE HELP ME SOLVE: BOX HAS TOTAL OF 44 COINS, CONSISTING OF PENNIES, DIMES AND QUARTERS. THE NUMBER OF PENNIES IS EQUAL TO THE NUMBER OF DIMES, AND THE TOTAL VALUE IS \$4.37 HOW MANY OF EACH DENOMINATION OF COIN DOES HE HAVE.1 solutions Answer 35893 by checkley71(8403)   on 2006-09-26 11:14:54 (Show Source): You can put this solution on YOUR website!44=2x+q & 4.37=.01x+.10x+.25q or q=44-2x or 4.37=.01x+.10x+.25(44-2x) or 4.37=.0x+.10x+11.00-.50x or 4.37-11.00=.01x+.10x-.50x or -6.63=-.39x or 6.63/.39=x or x=17 thus there are 17 pennies, 17 dimes & 10 quarters proof 17+17=10=44 & .01*17+.10*17+.25*10=4.37 .17+1.70+2.50=4.37 or 4.37=4.37
 Polynomials-and-rational-expressions/53551: Could someone help me figure out this problem: The question is to find the GCF of 11p3 and 5p2. Note the 3 and 2 are exponents. Thanks to all.1 solutions Answer 35884 by checkley71(8403)   on 2006-09-26 10:06:27 (Show Source): You can put this solution on YOUR website!55P^5
 Radicals/53574: Our teacher gave this on a test, but I can't find it in the text 10^2+5^2 He never covered what to do if the radicals are already prime. Am I going to kick myself with the answer. What am I missing?1 solutions Answer 35882 by checkley71(8403)   on 2006-09-26 09:58:55 (Show Source): You can put this solution on YOUR website!10^2+5^2 or 10*10+5*5 or 100+25=125
 Equations/53576: find y for each specified x value xy = 18 ; x = 4.51 solutions Answer 35815 by checkley71(8403)   on 2006-09-25 20:38:34 (Show Source): You can put this solution on YOUR website!XY=18 OR 4.5Y=18 OR Y=18/4.5 OR Y=4
 Points-lines-and-rays/53577: Find the coordinates of the midpoint of a segment having the given endpoints. k(-9,3) h(5,7) Find the coordinates of the midpoint of a segment having the given endpoints. w(-12,-7) t(-8,-4)1 solutions Answer 35814 by checkley71(8403)   on 2006-09-25 20:36:20 (Show Source): You can put this solution on YOUR website!THE DISTANCE BETWEEN THE X POINTS IS 5-(-9) OR 14 THEREFORE THE MID POINT IS 14/2 OR 7 AWAY FROM THE ENDS OR -9+7=-2 OR 5-7=-2 & THE Y DISTANCE IS 7-3=4 & IT'S MIDPOINT IS 4/2=2 AWAY FROM THE END POINTS OR 3+2=5 & 7-2=5 THEN THE MID POINT IS (-2,5). -8-(-12)=-8+12=4 THE X MIDPOINT IS 4/2=2 FROM THE ENDS OR -12+2=10 & -8-2=-10 -4-(-7)=-4+7=+3 THE Y MIDPOINT IS 3/2 FROM THE ENDS OR -7+3/2 OR -5.5 & -4-3/2=5.5
 Travel_Word_Problems/53595: Andy leaves on a cross country car trip at 7:00 am. He averages 50 miles per hour. Celine plans to drive the same route, but does not leave until 8:00 am. She averages 60 miles per hour. At what time will Celine catch up with Andy?1 solutions Answer 35812 by checkley71(8403)   on 2006-09-25 20:27:28 (Show Source): You can put this solution on YOUR website!50T=60(T-1) OR 50T=60T-60 OR 10T=60 OR T=6 HOURS PROOF 50*6=60(6-1) OR 300=60*5 OR 300=300
 Money_Word_Problems/53581: Natalie has some nickels, Dirk has some dimes, and Quincy has some quarters. I f Natalie gives Dirk a nickel, Dirk gives quincy a dime, and Quincy gives Natalie a quarter, they will have the same amount of money. How many coins did each person have ORIGINALLY! I am in Algebra 1 Honors and am an A student and normally I at least TRY to figure these things out but this one just frustrated me horribly. I don't realy want the answer. I just want to know HOW to do the problem and set it up. PLEASE HELP!1 solutions Answer 35811 by checkley71(8403)   on 2006-09-25 20:24:31 (Show Source): You can put this solution on YOUR website!5N-5+25=10D+5-10=25Q+10-25 OR 5N+20=10D-5=25Q-15 OR 5*3+20=10*4-5=25*2-15 OR 15+20=40-5=50-15 OR 35=35=35 THEREFORE THEY STARTED WITH 4 NICKLES, 5 DIMES & 3 QUARTERS
 expressions/53591: Hi! I need some help with this word problem. I'm trying to help my 3rd grade son figure out a problem he got wrong on a math test. I know it's simple. I know the answer, but I don't know how to write it out Please help: Lauren has collected 150 nickels and dimes. She has 70 more nickels than dimes. How many of each does she have? I came up with 110 nickels and 40 dimes. Thank you for your time!1 solutions Answer 35807 by checkley71(8403)   on 2006-09-25 20:11:11 (Show Source): You can put this solution on YOUR website!YOUR PROBLEM SAYS 50 NICKELS & DIMES. I BELIEVE YOU MEAN 150 NOT 50. 150=N+D & N=D+70 OR SUBSTITUTING (D+70) FOR N WE GET 150=(D+70)+D OR 150=D+70+D OR 2D=150-70 OR 2D=80 OR D=80/2 OR D=40 THEN 150=N+40 OR N=150-40 OR N=110
 Equations/53586: Can someone help me on this problem? I need to solve for x and check my results: 6x-5/5 - 2x/3 = 3 Thanks, Sher1 solutions Answer 35806 by checkley71(8403)   on 2006-09-25 20:05:28 (Show Source): You can put this solution on YOUR website!6X-5/5-2X/3=3 OR 6X-1-2X/3=3 OR 6X-2X/3=3+1 OR (18X-2X)/3=4 OR 16X/3=4 OR 16X=12 OR X=12/16 OR X=3/4 PROOF 6(3/4)-1-2(3/4)/3=3 OR 18/4-1-(6/4)/3=3 OR 18/4-1-(1.5)/3=3 OR 4.5-1-.5=3 OR 3=3
 percentage/53452: what is the formula to find out why 100 over 3500 equals 3%?1 solutions Answer 35796 by checkley71(8403)   on 2006-09-25 16:07:01 (Show Source): You can put this solution on YOUR website!THERE REALLY IS NO FORMULA HERE JUST SIMPLE DIVISION THUS 100/3500=.0285714 OR ROUNDING WE GET .03 OR 3%
 Graphs/53462: Well my teacher started with Slope which I understand perfectly. Than he showed us Standard form, Slope-Intercept form, and Point Slope form. For our homework he gave us 4 problems, 1.The points (-5,2) and (6,-4) 2.m=3/4 and the point (3,5) 3.-3/4x=5/3y-5 and 4.6-4x=3y. With those he wants us to find the equation for all the forms, slope and a graph. I just don't understand how to do that! If you could please explain how, that would be wonderful. Thanks a lot! 1 solutions Answer 35794 by checkley71(8403)   on 2006-09-25 16:03:53 (Show Source): You can put this solution on YOUR website!(-5,2)(6,-4) HAS A SLOPE OF (-4-2)/(6+5) OR -6/11 Y=-(6/11)X+b OR SUBSTITUTING -4 FOR X & 2 FOR Y WE GET 2=-(6/11)-4+b OR 2=24/11+b OR 2-24/11=b OR 22/11-24/11=b OR -2/11=b SO THE LINE EQUATION IS Y=-(6/11)X-2/11
 Miscellaneous_Word_Problems/53474: This question is from textbook Elementary and Intermediate Algebra I'm supposed to solve, graph and write solution set in interval notation for this problem. And I can't find an example in the book to help me. I was wondering if you could help with the steps and see if it reminds me how to do this. Thanks.. Fourteen increased by twice a number is less than or equal to three times the number. Find the numbers that satisfy this relationship. 1 solutions Answer 35793 by checkley71(8403)   on 2006-09-25 15:56:00 (Show Source): You can put this solution on YOUR website!14+2X<=3X OR 14=X PROOF 14+2*14<=3*14 OR 14+28<=42 OR 42<=42
 Money_Word_Problems/53526: If someone makes \$8 per hour and time and a half for any hours over 40, how much do they make if they work 45 hours one week?1 solutions Answer 35792 by checkley71(8403)   on 2006-09-25 15:48:48 (Show Source): You can put this solution on YOUR website!40*8+(1.5*8)5=320+12*5=320+60=\$380 FOR A 45 HOUR WEEK WITH TIME & A HALF FOR THE LAST 5 HOURS.
 Radicals/53545: what are the factors of 129?1 solutions Answer 35791 by checkley71(8403)   on 2006-09-25 15:45:35 (Show Source): You can put this solution on YOUR website!1 3 43 129
 Human-and-algebraic-language/53543: 31. A union chaarges monthly dues of \$4.00 plus \$.15 for each hour worked during the month. Aunion member's dues for March were\$29.20. How many hours did the union member work during the month of March? 32. A technical information hotline charges a customer \$15.00 Plus \$2.00 per minute to answer questions about software. How many mintues did a customer who received a bill for \$37 use this service? these two problems are on page 1111 solutions Answer 35790 by checkley71(8403)   on 2006-09-25 15:43:40 (Show Source): You can put this solution on YOUR website!4.00+.15X=29.20 OR .15X=29.20-4.00 OR .15X=25.20 OR X=25.20/.15 OR X=168 HOURS WORKED DURING THE MONTH OF MARCH. PROOF 4.00+.15*168=29.20 OR 4.00+25.20=29.20 OR 29.20=29.20 15.00+2.00X=37.00 OR 2.00X=37.00-15.00 OR 2.00X=22.00 OR X=11 MINUTES PROOF 15.00+2.00*11=37.00 OR 15.00+22.00=37.00 OR 37.00=37.00
 absolute-value/53542: This question is from textbook Where do I start? 3x+4=121 solutions Answer 35788 by checkley71(8403)   on 2006-09-25 15:36:45 (Show Source): You can put this solution on YOUR website!3X+4=12 OR SUBTRACTING 4 FROM BOTH SIDES WE GET 3X+4-4=12-4 OR 3X=8 NOW DIVIDE BOTH SIDES BY 3 WE GET (3X)/3=8/3 OR X=8/3 OR X=2 2/3 PROOF 3(8/3)+4=12 OR 8=4=12 OR 12=12
 Geometry_Word_Problems/53532: In a small rectangular wallet photo, the widith is 7 cm less than the length. If the border (perimeter) of the photo is 34cm, find the length and width1 solutions Answer 35787 by checkley71(8403)   on 2006-09-25 15:33:33 (Show Source): You can put this solution on YOUR website!2*LENGTH+2*WIDTH=PERIMETER OF A RECTANGLE THUS 2X+2(X-7)=34 OR 2X+2X-14=34 OR 4X=48 OR X=48/4MOR X=12 FOR THE LENGTH & 12-7=5 FOR THE WIDTH PROOF 2*12+2*5=34 OR 24+10=34 OR 34=34
 Linear-systems/53440: This question is from textbook geometry interation, application connections find the x- and y- intercepts and slope of the graph of each equation. 13.y= -x1 solutions Answer 35738 by checkley71(8403)   on 2006-09-24 21:34:11 (Show Source): You can put this solution on YOUR website!13y=-x or y=-x/13 or the slope is -1/13 and the y intercept is 0. the x intercept is found by setting the y value to 0 thus 0=x thus the x intercept is 0.
 Linear-systems/53486: Mr. McKelvey finds that flying with the wind he can travel 1188 miles in 6 hours. However, when flying against the wind, he travels only 2/3 of the distance is the same amount of time. Find the speed of the plane in still air and the wind speed.1 solutions Answer 35737 by checkley71(8403)   on 2006-09-24 21:24:51 (Show Source): You can put this solution on YOUR website!1188/6=198 mph with the wind. (1188*2/3)/6=792/6=132 mph against the wind 198-132=66 is the difference thus the wind is 66/2=33 mph. proof 198-33=165 & 132+33=165 which is the speed of the plane in still air.