Questions on Algebra: Equations answered by real tutors!

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Question 1120354: solve the equation and show the check of your solutions:
3x over x-4 minus 6 over x^2-7x+12 equal 2x over x-3
3x/x-4 - 6/x^2-7x+12 = 2x/x-3
Click here to see answer by Boreal(15235)

Question 1120362: n-8+1-4n
Click here to see answer by ikleyn(52776)

Question 1120356: Solve the following quadratic equations:
1. (2x + 3)(5x � 15) = 0
2. x2 � 8 =0
3. x2 + 5x � 36 = 0
4. x2 = -8x + 15

Click here to see answer by josgarithmetic(39616)

Question 1120356: Solve the following quadratic equations:
1. (2x + 3)(5x � 15) = 0
2. x2 � 8 =0
3. x2 + 5x � 36 = 0
4. x2 = -8x + 15

Click here to see answer by ikleyn(52776)

Question 1120377: solve the equation and show the check of your solution:
4 over x^2-1 minus 1 equal to 2 over x-1

4/x^2-1, -1 = 2/x-1
Click here to see answer by josgarithmetic(39616)

Question 1120457: Suppose the product of the roots of a quadratic equation is given, do you think you can determine the equation? Justify your answer.

Click here to see answer by Boreal(15235)

Question 1120512: If p = q (r - 1/s), find r.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1120512: If p = q (r - 1/s), find r.
Click here to see answer by josgarithmetic(39616)

Question 1120512: If p = q (r - 1/s), find r.
Click here to see answer by MathTherapy(10551)

Question 1120513: Find a quadratic equation in the form ax^2 + bx + c = 0, where a, b and c are integers whose roots are 2/3 and -3/4.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1120515: A town under siege has sufficient food for 200 days at a constant rate of consumption. After 50 days, a quarter of the inhabitants escape and those left are put on half rations. How many days altogether will the remaining food last?
Click here to see answer by ankor@dixie-net.com(22740)

Question 1120518: The perimeter of a rectangle remains fixed at 16cm. By first writing, an equation involving the sides of the rectangle, find the dimensions that give the maximum area.
Click here to see answer by Boreal(15235)

Question 1120598: Solve the 2y+9=0
1.The number line
2.the cartesion
Click here to see answer by rothauserc(4718)

Question 1120656: X^2+y^2=52, x-y =2 then what is the value of XY?
Click here to see answer by josgarithmetic(39616)

Question 1120514: An alcoholic drink has 5.5% alcohol by volume. The label on a 375mL bottle says it contains 1.6 standard drinks.
a) How many mL of alcohol are in a 375 mL bottle?
b) It is recommended that a fully licensed male driver should have a maximum of one standard drink every hour. Express this as a rate in mL/minute, correct to 3 significant figures.
Click here to see answer by Shin123(626)

Question 1120847: What must be added to 3x^2 -12x to make it a perfect square?
Click here to see answer by josmiceli(19441)

Question 1120847: What must be added to 3x^2 -12x to make it a perfect square?
Click here to see answer by MathTherapy(10551)

Question 1120849: if a:b = 5: 12, find the value of sqrt(a^2 + b^2)/ a
Click here to see answer by josgarithmetic(39616)

Question 1120849: if a:b = 5: 12, find the value of sqrt(a^2 + b^2)/ a
Click here to see answer by Alan3354(69443)

Question 1120854: find three consecutive integers whose sum is 105
Click here to see answer by josgarithmetic(39616)

Question 1120854: find three consecutive integers whose sum is 105
Click here to see answer by Alan3354(69443)

Question 1120920: A student finds a pile of nickels and dimes, and immediately announces "I found two dollars and fifteen cents!" If the number of dimes is 4 more than the 3 times the number of nickels, how many of each coin did this student find?.
Click here to see answer by math_helper(2461)

Question 1120924: If a:b=5:12, find the value of {sqrt(a^2+b^2)}/a
Click here to see answer by ikleyn(52776)

Question 1120924: If a:b=5:12, find the value of {sqrt(a^2+b^2)}/a
Click here to see answer by Alan3354(69443)

Question 1120981: How many hours it take for a bus to travel 1000 km if it travels at an average velocity of 20 km/hr.
Click here to see answer by ikleyn(52776)

Question 1120982: Starting from rest an airplane accelerates to take off to a speed of 2.50 km/hr in 20 seconds. What is the acceleration of the airplane in m/s^2?
Click here to see answer by ikleyn(52776)

Question 1121105: A team won exactly 4 of their first 15 games. They then played N remaining games and won all of them. If they won exactly half of all the games they played, what is the value of N?
Click here to see answer by ankor@dixie-net.com(22740)

Question 1121143: A piece of wire 48cm long is cut into two pieces. The first is 4x cm long and each piece is bent to form a square.
a) Show that A, the sum of the areas of the two square will be given by A= 2x^2 -24x + 144.
b) At what value of x will the lowest value of A occur
c)Hence or otherwise, find the lowest value of A
Click here to see answer by htmentor(1343)

Question 1121134: 4 - (-6)
_______
-5
Please solve
Click here to see answer by josgarithmetic(39616)

Question 1121159: solve the equation by factoring: 3n^2-12=16n
Click here to see answer by ikleyn(52776)

Question 1121174: A and B working together can complete a job in 30 days. After they had both worked 18 days, however, A left and B finished the work in 20 more days. Find the time in which each can do the work alone.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1121162: If the solution for x of x^2+px+q=0 are the cubes of the solutions for x^2+mx+n=0, express p and q in terms of m and n.
Click here to see answer by ikleyn(52776)

Question 1121173: A water tank can be filled with a large inlet pipe and a small inlet pipe in three hours. The large inlet pipe alone can fll the tank in 2 hours less than the small inlet pipe alone. Find the time the tank can be filled by each pipe alone.
Click here to see answer by josmiceli(19441)

Question 1121167: A piece of wire 48cm long is cut into two pieces. The first is 4x cm long and each piece is bent to form a square.
a) Show that A, the sum of the areas of the two squares will be given by A = 2x^2 -24x + 144.
b) At what value of x will the lowest value of A occur?
c) Hence or otherwise, find the lowest value of A.
Click here to see answer by josgarithmetic(39616)

Question 1121171: A department store sells 20 portable stereos per week at $80 each. The manager believes that for each decrease of $5 in the price, six more stereos will be sold. What price should be charged if the revenue needs to be $2240?
Click here to see answer by josgarithmetic(39616)

Question 1121191: solve the equation by use of the quadratic formula.
3x^2=2x+6
Click here to see answer by josmiceli(19441)

Question 1121191: solve the equation by use of the quadratic formula.
3x^2=2x+6
Click here to see answer by Boreal(15235)

Question 1121191: solve the equation by use of the quadratic formula.
3x^2=2x+6
Click here to see answer by ikleyn(52776)

Question 1121224: Brenda drove three times as far as Jan. Brenda drove 24 miles more than Jan. How far did Jan drive?
Click here to see answer by ikleyn(52776)

Question 1121280: u=vw+z, solve for v
Could someone help?
Click here to see answer by ikleyn(52776)

Question 1121280: u=vw+z, solve for v
Could someone help?
Click here to see answer by Alan3354(69443)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 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39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580