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Question 1089848: Solve the modeling problem. Cell Phone Charges: A cell phone service provides communication between two cities. If x represents the number of minutes for the call, where x > 0 , then the function
gives the total cost of the call in dollars. Find the cost of a 7.5 minute call.
Click here to see answer by EMStelley(208)

Question 1089984: Write the standard form of the equation of the circle with the given center and radius
center = (-3,-1) r = squareroot3
Click here to see answer by Fombitz(32388)

Question 1089983: write the value or values of the variable that make a denominator zero. these are the restrictions on the variable. keeping the restrictions in mind, solve the equation.
5/x = 10/3x + 4
Click here to see answer by Fombitz(32388)

Question 1089982: write the value or values of the variable that make a denominator zero. these are the restrictions on the variable. keeping the restrictions in mind, solve the equation.
1/x-4 - 5/x+2 = 6/x^2-2x-8
Click here to see answer by Alan3354(69443)

Question 1090054: find f(-5) if f(x)=4x^3+23x^2+11x-23
Click here to see answer by Edwin McCravy(20054)

Question 1090080: 7x � 2(x + 5) = 1 � 2(4 � 3x) is x = -3.
Using LS = RS and substitution, verify that this answer is correct.
I don't know how to use LS = RS so I need help with that.
Click here to see answer by josmiceli(19441)

Question 1090082: Solve for x : 5/6 = 8/x
Click here to see answer by jim_thompson5910(35256)

Question 1090087: Please help me to solve this equation : 12/(15+2.143) =7/0
9/(15-2.143) =7.0
Click here to see answer by josgarithmetic(39616)

Question 1090086:
Click here to see answer by ikleyn(52776)

Question 1090100: -16=x/4+2 x is above the 4 in fraction form...I solved it my answer was -72, but not sure if was right.
Click here to see answer by jim_thompson5910(35256)

Question 1090128: The sum of double a number and 7 is halved to give -3. What is the number?
Click here to see answer by Fombitz(32388)

Question 1090233: I need to use interval notation to solve this. Can someone help? Thanks.
x-3/x+2 > 0
Thank you.
Click here to see answer by Fombitz(32388)

Question 1090233: I need to use interval notation to solve this. Can someone help? Thanks.
x-3/x+2 > 0
Thank you.
Click here to see answer by ikleyn(52776)

Question 1090270: 2x squre+4x+6 ka factored Kya hoga?
Click here to see answer by ikleyn(52776)

Question 1090313: (ex+fy)(gx-hy)
In the expression above, e,f,g, and h are non-zero constants and eh=fg. If eg=18 and fh= 50, what is the value of the coefficient of the xy term when the expression is multiplied out and the like terms are collected?
Click here to see answer by KMST(5328)

Question 1090363: If f(x)= 2a|3x � 9| � ax, where a is some constant not equal to zero, find f ′(3).
A.) 0

B.) not enough information
C.) 1
D.) DNE
Is the answer Does Not Exist correct?
Click here to see answer by jim_thompson5910(35256)

Question 1090382: How do Curves A and B compare to each other with respect to f and f ′?
Graph A increases from the left to cross the x axis near 0.6. Graph B is increasing from left to right, crossing the x axis at about 0.2, then crossing the y axis around 1, decreases to cross the x axis around 0.8 and then increasing, crossing the x axis around 1
Answer Options Below:
The answer cannot be determined.
f: Curve B, f ′: Curve A
Neither Curve A or Curve B are derivatives of each other.
f: Curve A, f ′: Curve B
My final answer is "The answer cannot be determined."
Click here to see answer by dennisrizelleruiz(5)

Question 1090360: Which one of the following does NOT find the value of f'(5) for f(x) = 3x^2 � 2x � 4?
A.) All of these find the value for f'(5).
B.) f prime of 5 equals the limit as h approaches 0 of the quotient of the quantity 3 times the square of the quantity 5 plus h minus 2 times the quantity 5 plus h minus 4 minus 3 times 5 squared plus 2 times 5 plus 4, and h
C.) f prime of 5 equals the limit as x approaches 5 of the quotient of 3 times x squared minus 2 times x minus 4 minus 61, and the quantity x minus 5
D.) limit as h approaches zero of 3 times the quantity five plus h squared minus two times the quantity five plus h minus four minus the quantity three times five squared minus two times five minus four all divided by h.
My answer is A but I'd like confirmation that this is the correct choice, along with an explanation if applicable.
Click here to see answer by Fombitz(32388)

Question 1090515: A man has rs 35000 invested part 3 and half percent and the rest at 4% the total income is Rs 1300 find the sum invested at each rate

Click here to see answer by jorel1380(3719)

Question 1090549: Find three consecutive integers such that the sum of the largest and four times the second is 42 more than the first.
Click here to see answer by richwmiller(17219)

Question 1090605: -4(y+6) = 63

Click here to see answer by addingup(3677)

Question 1090609: Write each English phrase as an algebraic expression. Let x represent the number.
a) The difference of 8 and half of a number
Answer:
b) Six less than the quotient of 4 and a number
Answer:

Click here to see answer by Fombitz(32388)

Question 1090621: An 8m long bus, travelling at a speed of 30km/h, entered a tunnel. It to0k 3 minutes to come out completely the other end. Find the length of the tunnel.
Click here to see answer by Alan3354(69443)

Question 1090620: A fruiterer bought 8 boxes of apples at $95 per box and the cost of transporting them to his shop was $3 per box. If he wished to make a profit of $152 by selling all of them, how much should he sell each box of apples?
Click here to see answer by ankor@dixie-net.com(22740)

Question 1090622: The average mass of 24 boys in a class is 35.5 kg and that of 15 girls is 29kg. A new boy joins the class and his mass is 1.4kg heavier than the average mass of the whole class of 39 people. Find the average mass of the new class of 40 people after the new boy joined the class.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1090635: The ratio of the number of boys to the number of girls in a class of 42 pupils was 4:3 when some boys left the class the number of girls was the same as the number of boys. how many boys left the class
Click here to see answer by ikleyn(52776)

Question 1090626: 3-8c=35
Click here to see answer by Alan3354(69443)

Question 1090625: Justin has a total of 16 Singapore and Malaysian stamps. If he exchanges every Singapore stamp for 2 Malaysian stamps, he will have 21 Malaysian stamps. How many Singapore and Malaysian stamps does Justin have?
Click here to see answer by Edwin McCravy(20054)

Question 1090654: how to graph line y=-2/5x-3
Click here to see answer by josgarithmetic(39616)

Question 1090715: A man earns $11 250 a year and saves $150 monthly/
a) What are his total savings?
b) What percentage of his income are his savings?
Click here to see answer by Fombitz(32388)

Question 1090757: To isolate X in ax equals B what should you divide both sides by?
Click here to see answer by Alan3354(69443)

Question 1090755: Tim and Jeff have some money. If Jeff gives $5 to Tim, then they will have the same amount of money.
If Tim gives $5 to Jeff, then Jeff would have twice as much as Tom. how much money does each have at first?
Click here to see answer by ikleyn(52776)

Question 1090754: Peter and Paul had $340 altogether. Peter spent three-fourths of his money and Paul spent two-fifths of his money. Then they found that they had an equal amount of money left. How much money did each of them have at first?
Click here to see answer by jorel1380(3719)

Question 1090753: A father was 27 years old when his son was 3 years old. In how many years time would the father be 3 times old as the son?
Click here to see answer by jorel1380(3719)

Question 1090752: Tom and Jerry had a basketball match. At the end of the match, the total score was 120 points. If tom scored 21 more points than half of the points that jerry scored, what was the final score of each team?
Click here to see answer by jorel1380(3719)

Question 1090780: If 12 men can unload 360 tonnes of goods in 5 hours, find the rate of unloading in tonnes/man-hour. How many men are needed to unload 72 tonnes in 4 hours?
Click here to see answer by ankor@dixie-net.com(22740)

Question 1090781: Mrs Lee bought 50 books for $50. She paid $4 for each of the big books and$1 for 4 smaller books. How many big books and small books did she buy?
Click here to see answer by josgarithmetic(39616)

Question 1090799: The length, 18 meters, is the answer to the following question. "the length of a rectangle is 3 meters longer than its width. the area of the rectangle is 270 square meters. what is the length of the rectangle: Rework this problem: Write an equation using L as the length in meters of the rectangle that would lead to the solution of the problem. Check your answer by substituting 18 for L in the equation.
Click here to see answer by jorel1380(3719)

Question 1090638: One cell phone plan charges $17.50 per month plus $0.17 per minute used. A second cell phone plan charges $32 per month plus $0.07 per minute used. Write and solve an equation to find the number of minutes you must talk to have the same cost for both calling plans.
Click here to see answer by jorel1380(3719)

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