Tutor:

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

---

Recent problems solved by 'Fombitz'

Fombitz answered: 13805 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 , 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): You can put this solution on YOUR website!

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. side 1 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): You can put this solution on YOUR website!

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+4x 1 solutions Answer 222150 by Fombitz(13828)   on 2010-06-02 12:54:53 (Show Source): You can put this solution on YOUR website!

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.com 1 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): You can put this solution on YOUR website!

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 = 75 1 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 4 1 solutions Answer 222134 by Fombitz(13828)   on 2010-06-02 10:48:33 (Show Source): You can put this solution on YOUR website!

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=-14 1 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)