Questions on Algebra: Equations answered by real tutors!

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Question 1185448: Find the counter example for all numbers x,x > 1/x and x,x + x> x
Click here to see answer by greenestamps(13198)

Question 1185465: Consider the equation y = − 2x + 5 .
Construct a table of five ordered pairs that satisfy the equation.

Click here to see answer by yyy edfjre(1)

Question 1185465: Consider the equation y = − 2x + 5 .
Construct a table of five ordered pairs that satisfy the equation.

Click here to see answer by ikleyn(52776)

Question 1185501: Aki's Bicycle Designs has determined that when x hundred bicycles are built, the average cost per bicycle is given by C(x)=0.2x^-1.6x+10.64, where C(x) is in hundreds of dollars. How many bicycles should the shop build to minimize the average cost per bicycle?

Click here to see answer by ikleyn(52776)

Question 1185503: n=4
i and 2i are zeros
f(-2)=120
f(x)=
Click here to see answer by MathLover1(20849)

Question 1185590: A flare is launched from a life raft an initial velocity of 80 meters per second. How many
seconds will it take the flare to fall back to the sea
Click here to see answer by ikleyn(52776)

Question 1185628: The average yearly earnings of engineering majors exceed the earnings of marketing majors by $24,000. The average yearly earnings of accounting majors exceed the earnings of marketing majors by $5,000. Combined, the average yearly earnings for these three college majors are $245,000. Determine the average yearly earnings, in thousands of dollars, for each of these three college majors.
Click here to see answer by greenestamps(13198)

Question 1185713: a student scored 70% on a test that contains 30 questions to improve his score the instructor agrees to let him work 15 additional questions how many must he get right to raise his grade to 80%

Click here to see answer by greenestamps(13198)

Question 1185851: Formula If you know that n is 1/3 of m.
To find : How could you rewrite this formula?

Click here to see answer by Theo(13342)

Question 1185913: A pyramid was built with approximately 2.3 million stone blocks, each weighing 2.4 tons (1 ton = 2,000 lbm). Find the mass of the pyramid in kg.

Click here to see answer by ikleyn(52776)

Question 1185919: An apple contains 110 calories and 2 g of fiber. A banana contains 120 calories and 3 g of fiber. Set up a system of equations that could be solved to determine the number of apples (A) and bananas (B) that should be eaten to obtain 3860 calories and 80 g of fiber.
Equation 1:
Equation 2:
Click here to see answer by ikleyn(52776)

Question 1185963: Write an equation for the ellipse with each set of characteristics. Then answer the question. Vertices (-7,-3), (13-,3) foci (-5,-3),(11,-3)
What is the a and b value of the ellipse?

Click here to see answer by greenestamps(13198)

Question 1185965: Write an equation for the ellipse with each set of characteristics. Then answer the question. Vertices (-7,-3),(13,-3) foci (-5,-3),(11,-3)
What is the center of the ellipse?
Click here to see answer by greenestamps(13198)

Question 1185966: Write an equation for the ellipse with each set of characteristics. Then answer the question. co-Vertices (-13,7),(-3,7) length of major axis is 16
What are the a and b in this ellipse?
Click here to see answer by greenestamps(13198)

Question 1185964: Write an equation for the ellipse with each set of characteristics. Then answer the question. Vertices (4,3),(4,-9) length of minor axis is 8
What are the a and b values?
Click here to see answer by greenestamps(13198)

Question 1185976: Find the product of an equation below:
(x-3)(x^3 - x^2 - x)= I come up with x^4 - 4x^3 + 2x^2 +3x
Did I come up with correct answer?
Thank you
Click here to see answer by MathLover1(20849)

Question 1185997: A cucumber sells for 30 cents and a squash sells for 40 cents. A total of 40 vegetables were sold for $13.80. How many cucumbers were sold?
Click here to see answer by ikleyn(52776)

Question 1186043: Solve this simultaneous equation:
,
Click here to see answer by ikleyn(52776)

Question 1186161: 5xcm, 4ycm and (x + y +a)cm are lengths of the sides of an aquilateral triangle given in terms of x and y. Find x and y
Click here to see answer by ikleyn(52776)

Question 1186160: In the manufacture of widgets, the average dimension of a part is 0.005 cm. Using the absolute-value symbol, express the fact that an individual measurement x of a part does not differ from the average by more than 0.0006 cm.
Click here to see answer by ikleyn(52776)

Question 1186169: An office needs 20 copies of a 420-page report. One photocopier can copy 1800 pages per hour. Another copier is faster and can copy 2400 pages per hour. To find the time it would take the two copiers together to complete the project, you can use this verbal model. Assign labels to the model to form an equation. "the rate of the first machine" 'times' "the time to complete" 'plus' "the rate of the second machine" 'times' "the time to complete" 'equals' "total pages"

Click here to see answer by ikleyn(52776)

Question 1186191: find an equation of the line that has a y intercept of -4 that is parallel to the graph of the line y=6
Click here to see answer by josgarithmetic(39616)

Question 1186200: Find the standard form of the equation of the ellipse with the given characteristics.
Center: (3, −8); a = 8c; foci: (3, −9), (3, −7)

Click here to see answer by ikleyn(52776)

Question 1186180: 1.) Write each fraction in terms of the LCM of the denominators.
15/16a3b3, 17/30a5b ??..
2.) The Water Cube was built in Beijing, China, to house the National Swimming Center for the 2008 Olympics. Although not actually a cube (its height is not equal to its length and width), the Water Cube is designed to look like a "cube" of water molecules. The volume of the 31-meter-high Water Cube is
971,199 m3.
Find the length of a side of its square base. Recall that
V = LWH. ??...
3.) A square piece of cardboard is formed into a box by cutting 10-centimeter squares from each of the four corners and then folding up the sides, as shown in the figure below. If the volume V of the box is to be 81,000 cm3, what size square piece of cardboard is needed? Recall that V = LWH. Length ??.. cm, Width ??.. cm. ??..

Click here to see answer by ankor@dixie-net.com(22740)

Question 1186335: Simplify the following rational expression:
5x-20/2x ÷2x-8/x with all steps pretty please
Click here to see answer by MathLover1(20849)

Question 1186417: the quotient of a number and -9 increased by 10 is 11

Click here to see answer by Alan3354(69443)

Question 1186422: The sum of three times a number and two less than four times that same number is 61.Find the number.
Click here to see answer by Alan3354(69443)

Question 1186422: The sum of three times a number and two less than four times that same number is 61.Find the number.
Click here to see answer by JBnovelwriter(34)

Question 1186428: A container has 500.0 mL of an aqueous solution containing Ca2+ ions. How many grams of Ca2+ ions are in the solution if the molarity is 0.534 M?
Click here to see answer by josgarithmetic(39616)

Question 1186444: Which is the smallest prime number among the following?
A 147 B 157 C 167 D 177 E 187
Click here to see answer by ikleyn(52776)

Question 1186445: Which one of these numbers is equal to the product of the other four numbers?
A -2 B 3/4 C 1/6 D -1/4 E 9
Click here to see answer by MathLover1(20849)

Question 1186445: Which one of these numbers is equal to the product of the other four numbers?
A -2 B 3/4 C 1/6 D -1/4 E 9
Click here to see answer by ikleyn(52776)

Question 1186445: Which one of these numbers is equal to the product of the other four numbers?
A -2 B 3/4 C 1/6 D -1/4 E 9
Click here to see answer by greenestamps(13198)

Question 1186441: I have a pile of socks which contains 12 white socks, 12 black socks, and 12 red socks.
How many socks must I take from the pile to be certain that I have at least one matching
pair?
Click here to see answer by ikleyn(52776)

Question 1186439: How many feet of fence does it require to surround a square field having an area of one
million square feet?
Click here to see answer by ikleyn(52776)

Question 1186437: 𝑥𝑠𝑒𝑛𝑥2𝑑𝑥=
Click here to see answer by ikleyn(52776)

Question 1186461: A tennis court is 24 meters longer than twice its width and the perimeter of the court is 210 ft. What are the length and width of the court

Click here to see answer by josgarithmetic(39616)

Question 1186476: x^2-100 = 0

Click here to see answer by Edwin McCravy(20054)

Question 1186476: x^2-100 = 0

Click here to see answer by Alan3354(69443)

Question 1186494: Determine the vertex and the axis of symmetry of the given parabola. Graph your answer.
1/2(x÷4)²+6
Click here to see answer by ikleyn(52776)

Question 1186622: Aj's mom likes making people think with her intriguing statements. When asked what her age is, she said that seven years ago, she was eleven times as old as her daughter. Now she is four times as old as her daughter. How old is Aj's mom?
Click here to see answer by ankor@dixie-net.com(22740)

Question 1186671: Find the standard form of the equation for the circle with the following properties.
Center (8,−7/3) and tangent to the y-axis
Click here to see answer by greenestamps(13198)

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, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 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, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240, 30241..30285, 30286..30330, 30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045, 36046..36090, 36091..36135, 36136..36180, 36181..36225, 36226..36270, 36271..36315, 36316..36360, 36361..36405, 36406..36450, 36451..36495, 36496..36540, 36541..36585, 36586..36630, 36631..36675, 36676..36720, 36721..36765, 36766..36810, 36811..36855, 36856..36900, 36901..36945, 36946..36990, 36991..37035, 37036..37080, 37081..37125, 37126..37170, 37171..37215, 37216..37260, 37261..37305, 37306..37350, 37351..37395, 37396..37440, 37441..37485, 37486..37530, 37531..37575, 37576..37620, 37621..37665, 37666..37710, 37711..37755, 37756..37800, 37801..37845, 37846..37890, 37891..37935, 37936..37980, 37981..38025, 38026..38070, 38071..38115, 38116..38160, 38161..38205, 38206..38250, 38251..38295, 38296..38340, 38341..38385, 38386..38430, 38431..38475, 38476..38520, 38521..38565, 38566..38610, 38611..38655, 38656..38700, 38701..38745, 38746..38790, 38791..38835, 38836..38880, 38881..38925, 38926..38970, 38971..39015, 39016..39060, 39061..39105, 39106..39150, 39151..39195, 39196..39240, 39241..39285, 39286..39330, 39331..39375, 39376..39420, 39421..39465, 39466..39510, 39511..39555, 39556..39600, 39601..39645, 39646..39690, 39691..39735, 39736..39780, 39781..39825, 39826..39870, 39871..39915, 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