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

 Polynomials-and-rational-expressions/310702: Solve. (x+14)(x-1)(x+2)>0 1 solutions Answer 222196 by Fombitz(13828)   on 2010-06-02 15:22:28 (Show Source): You can put this solution on YOUR website!Break up the number line into 4 regions, Region : (,) Region : (,) Region : (,) Region : (,) Pick a point in each region (not the endpoints) and test the inequality. If the inequality is true, that region is part of the solution set. . . Region , let False . . Region , let True . . Region , let False . . Region , let True So then the solution includes Regions 2 and 4. (,)U(,)
 Travel_Word_Problems/310703: how long would it take to fly to chicago at one-mile-per second and minutes?1 solutions Answer 222195 by Fombitz(13828)   on 2010-06-02 15:16:22 (Show Source): You can put this solution on YOUR website!From where?
 Systems-of-equations/310707: find the value of y when x=-2 for the equation -2x+9y+-5=0. write y as a rational number 1 solutions Answer 222194 by Fombitz(13828)   on 2010-06-02 15:15:34 (Show Source):
 Mixture_Word_Problems/310711: I bought .9 pounds of sugar for \$1.89. How much did each pound of sugar cost?1 solutions Answer 222193 by Fombitz(13828)   on 2010-06-02 15:14:21 (Show Source): You can put this solution on YOUR website!P=\$1.89/0.9 lb=\$2.10/lb \$2.10 per pound.
 Travel_Word_Problems/310693: A passenger train leaves Norfolk, Virginia, 1.2 hours after a freight train leaves. The passenger train is traveling 18 mph faster than the freight train on a parallel set of tracks. The trains are traveling IN THE SAME DIRECTION. The two trains will be at the same location 3 hours after the passenger train leaves. Find the speed of each train. 1 solutions Answer 222173 by Fombitz(13828)   on 2010-06-02 13:56:03 (Show Source): You can put this solution on YOUR website!Rate*Time=Distance Freight train is train 1, passenger train is train 2. Both go to the same destination, travel the same distance. Train 2 is 18 mph faster than Train 1. Train 2 takes 3 hours, train 1 1.2 hours longer. mph mph
 Quadratic_Equations/310688: Hello I have a problem solving this parabola question.The path of a cliff diver as he dives into a lake ,is given by this eqaution,y=-(x-10)(SQAURED)+75,where y metres is the diver's height above the water and,x metres is the horisontal distance travelled by the diver.What is the maximum height the diver is above the water?1 solutions Answer 222171 by Fombitz(13828)   on 2010-06-02 13:51:01 (Show Source): You can put this solution on YOUR website! Since the first term is always negative (since it's squared and multiplied by -1), the max value it reaches is zero (when x=10), which then only leaves the constant term. . . .
 Rectangles/310675: find the perimeter and area of a square with a 12 ft. side1 solutions Answer 222169 by Fombitz(13828)   on 2010-06-02 13:46:40 (Show Source): You can put this solution on YOUR website! ft ft^2
 logarithm/310691: Question edited. 1 solutions Answer 222167 by Fombitz(13828)   on 2010-06-02 13:45:44 (Show Source):
 Polynomials-and-rational-expressions/310679: I need to solve this equation: 3/x+2=(7/3x+6)+ (1/x-4)1 solutions Answer 222157 by Fombitz(13828)   on 2010-06-02 13:08:51 (Show Source): You can put this solution on YOUR website! . . . . . . .
 Graphs/310678: I have two questions: 1. Find, rounded to two decimal places, the solution(s) to the equation 0 = 2x3 - 5x + 7. 2. Solve the equation x(x - 2) = 7.1 solutions Answer 222156 by Fombitz(13828)   on 2010-06-02 13:04:35 (Show Source): You can put this solution on YOUR website! Looks like there is a root near . f(x)= f'(x)= I used Newton's method to iterate, x(n+1)=xn-f(xn)/f'(xn) Starting with , the solution quickly converge to or to two decimal places, . . . Use the quadratic formula,
 Numeric_Fractions/310578: name the set of 6 consecutive odd integers starting with -7?1 solutions Answer 222154 by Fombitz(13828)   on 2010-06-02 12:57:30 (Show Source): You can put this solution on YOUR website!-7 -5 -3 -1 1 3
 Percentage-and-ratio-word-problems/310579: john and joe collect used golf ball they find when they play golf. they gave away 1/4 of what they had to friends and still had 11,462 left. how many did they start with?1 solutions Answer 222153 by Fombitz(13828)   on 2010-06-02 12:56:49 (Show Source): You can put this solution on YOUR website! They started with 15283 golf balls.
 Expressions-with-variables/310640: 5x+4x1 solutions Answer 222150 by Fombitz(13828)   on 2010-06-02 12:54:53 (Show Source):
 Linear-equations/310670: Plot the points on the coordinate plane to sketch the line that passes through them. Compute the slope m that passes through the given points. (1,4) and (1,1)1 solutions Answer 222149 by Fombitz(13828)   on 2010-06-02 12:54:16 (Show Source): You can put this solution on YOUR website! The slope is undefined.
 Money_Word_Problems/310669: how much money would i have to put in a cd to draw \$500 a month joinnow2000@aol.com1 solutions Answer 222147 by Fombitz(13828)   on 2010-06-02 12:51:23 (Show Source): You can put this solution on YOUR website!At what percent interest? \$500/mo indefinitely or for a set period of time?
 Expressions-with-variables/310638: Evaluate the variable expression when a = 7, b = –2, and c = 5. 2b - (2c+a²)1 solutions Answer 222142 by Fombitz(13828)   on 2010-06-02 11:05:49 (Show Source):
 logarithm/310655: How do i solve an equation with the variable in the exponent? I know i have to use logs but i do not know how.1 solutions Answer 222141 by Fombitz(13828)   on 2010-06-02 11:04:21 (Show Source): You can put this solution on YOUR website!Two examples: . . .
 Circles/310641: find the radius r and the center (h,k) of the following circle 3(x-3)^2 + 3y^2 = 751 solutions Answer 222140 by Fombitz(13828)   on 2010-06-02 11:00:14 (Show Source): You can put this solution on YOUR website! Compare to the general equation of a circle of radius R centered at (h,k), . . . (h,k)=(3,0) R=5
 Quadratic-relations-and-conic-sections/310645: Find the ellipse 16x^2+25y^2-64x+50y-311=0, find the center, vertices, and foci, and draw a graph.1 solutions Answer 222138 by Fombitz(13828)   on 2010-06-02 10:58:19 (Show Source): You can put this solution on YOUR website!Complete the square in x and y. Center : (,) a: b: c:
 Expressions-with-variables/310648: When is the rational expression x/2y equal to 0?1 solutions Answer 222137 by Fombitz(13828)   on 2010-06-02 10:49:59 (Show Source): You can put this solution on YOUR website! when
 Expressions-with-variables/310649: When is the rational expression 1/(s+y) undefined? x=? s=?1 solutions Answer 222136 by Fombitz(13828)   on 2010-06-02 10:49:24 (Show Source): You can put this solution on YOUR website!Undefined when or , since division by zero is not defined.
 Expressions-with-variables/310650: translate the following into a variable expression 6 divided by the difference between x and 41 solutions Answer 222134 by Fombitz(13828)   on 2010-06-02 10:48:33 (Show Source):
 Triangles/310441: What is the perimeter of a 30°, 60°, 90° triangle with a hypotenuse of 20 cm?1 solutions Answer 222131 by Fombitz(13828)   on 2010-06-02 10:03:37 (Show Source): You can put this solution on YOUR website!The sides of a triangle are in ratio of The perimeter would then be the sum of the three sides. or approximately, cm
 Graphs/310444: when it says what is the soulution of the system? use elimination. how would i do this 3x+9y=33 over -10x-6y=-141 solutions Answer 222130 by Fombitz(13828)   on 2010-06-02 09:57:12 (Show Source): You can put this solution on YOUR website!Simplify both equations first, 1. . . 2. Add them together to eliminate y. Then use either equation to solve for y.
 Rectangles/310591: The ratio of the length of a rectangle to its width is 4 : 1.What percent of the perimeter is the width? 1 solutions Answer 222129 by Fombitz(13828)   on 2010-06-02 09:53:51 (Show Source): You can put this solution on YOUR website! . . . Perimeter in terms of width = Percentage of width to perimeter: 20% of the perimeter is width.
 Exponents/310552: If the distance from the earth to the sun were 92,900,000 miles, how long would it take a rocket, traveling at 2.8 × 103 miles per hour, to reach the sun? (Round to three places) 1 solutions Answer 222127 by Fombitz(13828)   on 2010-06-02 09:49:47 (Show Source): You can put this solution on YOUR website!Rate*Time=Distance Time=Distance/Rate hrs
 Mixture_Word_Problems/310597: How many liters of a 10% alcohol solution must be mixed with 50 liters of a 80% solution to get a 20% solution?1 solutions Answer 222126 by Fombitz(13828)   on 2010-06-02 09:46:43 (Show Source): You can put this solution on YOUR website!Let X be the liters of 10% solution. 300 liters of 10% solution.
 Travel_Word_Problems/310605: Bert is 22 kilometers away from Brenda. Both begin to walk toward each other at the same time. Bert walks at 2.5 kilometers per hour. They meet in 4 hours. How fast is Brenda walking?1 solutions Answer 222125 by Fombitz(13828)   on 2010-06-02 09:43:27 (Show Source): You can put this solution on YOUR website!Brenda's rate is B. Rate*Time=Distance Brenda's rate is 3 km/hr.
 test/310561: square root y+ square root y+7)=(7)1 solutions Answer 222124 by Fombitz(13828)   on 2010-06-02 09:37:15 (Show Source): You can put this solution on YOUR website! Square both sides. . . . Verify the solution. True, then it's a good solution.
 Reduction-of-unit-multipliers/310471: It is given that the formula is C=4h+9f+4p: C=calories h=carbohydrates f=fat p=protein the question is a serving of raisins contain 130 calories and 31 grams of carbohydrates. If the raisins are fat free how much protein is provided by this serving. I believe I am missing a formula to convert calories into grams. This is what I have so far: 130 cal.=4(31 g.)+ 9(0 g.)+4p 130 cal.= 1244g. +0g.+4(x) g. 130 cal.= 1244g. +4x g.1 solutions Answer 222121 by Fombitz(13828)   on 2010-06-02 09:24:24 (Show Source): You can put this solution on YOUR website!No, the units of h,f, and p are grams while 4,9,4 are in calories/gram. You have everything you need. Solve for p. 1.5 grams of protein are in 130 calories worth of raisins.
 Pythagorean-theorem/310470: 1.Determine the distance between A(-1, 2, 3) and B(4, -5, 6) to the nearest tenth. 2.Which of the following is the equation in slope-intercept form of the line that passes through (0, 2) and has a slope of -3. a)y = -3x + 2 b)y = 2x - 3 c)2/3x+0 d)-3/2+0 3.Determine the coordinates of the midpoint of the line segment whose endpoints are A(0, 2, 4) and B(-8, 2, -6). 4.Find the coordinate of the image of point (-1, 3) reflected over the x-axis. 5.What is the measure of the angle of rotation with respect to two lines that intersect to form a 25° angle? 1 solutions Answer 222119 by Fombitz(13828)   on 2010-06-02 09:19:33 (Show Source): You can put this solution on YOUR website!1. . . . 2.Use the point-slope form of a line, a) is the correct answer. . . . 3. A(, , ) B(, , ) M=(,,) . . . 4. Relection across the x-axis makes the y-coordinate negative. (-1,-3)