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Question 1011058: . to travel from singapore to kuala lampur ,a distance kf 390km , motoridt finds that if he travels 6 km/h faster than its usual average speed,he will take 15 minutes less ti complete his usual journey . Calculate the usual avergae speed of the motorist
Click here to see answer by MathTherapy(10552)

Question 1011086: Hi,
I would like to say thank you in advance.
My question is:
A certain punch press requires 2 hours longer to stamp a box of parts than does a newer-model punch press. After the old press has been punching a box of parts for 5 hours, it is joined by the new machine. Together, they finish the box of parts in 3 additional hours. How long does it take each machine, working alone, to punch a box of parts.
Thank you
Click here to see answer by josgarithmetic(39617)

Question 1011087: Hi,
I would like to just say thank you for taking the time to answer my question.
My question is:

A laborer built 35 m of stone wall. if she has built 2 m less each day, it would have taken her 2 days longer. How many meters did she build each day, working at her usual rate?
Thank you
Click here to see answer by josgarithmetic(39617)

Question 1011089: I would like to just say thank you for answering my question in advance.
My question is:
An object is thrown upward with a velocity of 45.0 m/s. When will it ne 25.0 m above its initial position.
The formula to use is: Vot + 1/2(gt^2)
Thank you.
Click here to see answer by Boreal(15235)

Question 1011284: If r and s are the roots of x^2 -8x +6 =0, find r^2 + 3rs +s^2. Thank you.
Click here to see answer by solver91311(24713)

Question 1011284: If r and s are the roots of x^2 -8x +6 =0, find r^2 + 3rs +s^2. Thank you.
Click here to see answer by ikleyn(52780)

Question 1011284: If r and s are the roots of x^2 -8x +6 =0, find r^2 + 3rs +s^2. Thank you.
Click here to see answer by MathTherapy(10552)

Question 1011310: What is the solutions of the linear quadratic system of equations
y=x^2+5x-3
y-x=2
Click here to see answer by It is costly(175)

Question 1008242: Solve by using a system of equations.
The number x of smartphones a manufacturer is willing to sell is given by
x = 21p − 1600,where p is the price, in dollars, per smartphone. The number x of smartphones a wholesale distributor is willing to purchase is given by
x = −4p + 900,where p is the price per smartphone. Find the equilibrium price.
=$

Click here to see answer by It is costly(175)

Question 1011332: Rice costs $X per kilogram
Potatoes costs $(x+1) per kilogram
The total costs of 12kg of rice and 7kg of potatoes is $31.70
Find the cost of 1kg of rice.
Click here to see answer by macston(5194)

Question 1011333: The cost of a small bottle of juice is $y
the cost of a large bottle of juice is $(y+1)
When Jade spends $36 on small bottles only, she receives 25 more bottles than when she spends $36 on large bottles only.
(I) show that 25y^2+25y-36=0
(II) Factorise 25y^2+25y-36=0
(III) solve the equation 25y^2+25y-36=0
(IV) find the total cost of 1 small bottle of juice and 1 large bottle of juice
Click here to see answer by Theo(13342)

Question 1011346: Solve the equation check for extraneous solutions
9|9-8x|=2x+3
Click here to see answer by josgarithmetic(39617)

Question 1011346: Solve the equation check for extraneous solutions
9|9-8x|=2x+3
Click here to see answer by It is costly(175)

Question 1011382: seven years back the age of a father was 5 times the age of his son. It will be twice after 14 years. Find their ages at present.
Click here to see answer by josgarithmetic(39617)

Question 1011384: On Pakistan Day 9 kg sweets were distributed among children. each child receives as more grams as the number of children and still 164 grams of sweets were left over. find number of children.
Click here to see answer by Theo(13342)

Question 1011412: If alpha and beta are the roots of the equation 2x^2+5x+3=0, find
(a)alpha^2+beta^2
(b) 2�alpha+2�beta
These question is written in words because alpha and beta signs aren't provided while typing.
Click here to see answer by rothauserc(4718)

Question 1011428: A projectile is fired at an inclination of 45 degrees to the horizontal, with a muzzle velocity of 100 feet per second.
The height H of the projectile is modeled by

Where x is the horizontal distance of the projectile from the firing point.
(A) At what horizontal distance from the firing point is the height of the projectile a maximum?
(B) Find the maximum height of the projectile.
(C) At what horizontal distance from the firing point will the projectile strike the ground?
(D) Using a graphing utility, graph the function H,
0(is equal to or less than) x (is equal to or less than) 350
(E) Using the graphing utility to verify the results obtained in parts B and C
(F) when the height of the projectile is 50 feet above the ground, how far has it traveled horizontally?
Click here to see answer by ankor@dixie-net.com(22740)

Question 1011455: A toy rocket is launched straight up into the air with an initial velocity of 60 ft/s from a table 3 ft above the ground. If acceleration due to gravity is �16 ft/s2, approximately how many seconds after the launch will the toy rocket reach the ground?
Click here to see answer by Boreal(15235)

Question 1011493: The height of an arch is modeled by the equation y=-x^2-6x+16. Which of the following gives the width of the arch at its base? the y-coordinate of the vertex double the x-coordinate of the vertex the y-intercept of the equation the difference between the zeroes
Click here to see answer by josmiceli(19441)

Question 1011475: The table shows some values for the function y=11x-2x^2-12 for 1 < or equals to X < or equals to 4.5
|X|1|1.5|2|2.5|3|3.5|4|4.5
|Y|-3| |2|3 |3| | | |
A) Complete the table of values
B) draw a graph to solve the equation 11x-2x^2-12=0
The table of values is not perfect, pls I advice u draw it again on a sheet of paper to know which one belongs to which.
Click here to see answer by MathLover1(20849)

Question 1011411: The table shows some values for the function y=11x-2x^2-12 for 1 less than or equals to X less than or equal to 4.5
X|1 1.5 2 2.5 3 3.5 4 4.5
Y|-3| | 2| 3 | 3| | | |
(A) Complete the table of values
(B) draw the graph of y=11x-2x^2-12=0
Click here to see answer by MathLover1(20849)

Question 1011549: how would I graph y = 9x-4
Click here to see answer by ikleyn(52780)

Question 1011549: how would I graph y = 9x-4
Click here to see answer by addingup(3677)

Question 1011563: Find the equation of the line that passes through the point (1, -2) and is parallel to y=4
Click here to see answer by ankor@dixie-net.com(22740)

Question 1011599: Given that the lengths of the three sides of right-angled triangle are x cm,x+1 and x+2 units,find the value of x

Click here to see answer by josgarithmetic(39617)

Question 1011652: Find the roots of x^2-2 route 3 x + 4 = 0 if exist using quadratic formula
Click here to see answer by Alan3354(69443)

Question 1011717: If x^2 - 3x + 2k is divided by x+2, the remainder is 7. What is k? Thank you.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1011717: If x^2 - 3x + 2k is divided by x+2, the remainder is 7. What is k? Thank you.
Click here to see answer by MathTherapy(10552)

Question 1011724: Simple methods of quadratic equation ?how can i solce a sum?
Click here to see answer by addingup(3677)

Question 1011848: Suppose that the cost function for a particular item is given by the equation
C(x) = 2x2 − 360x + 16,420,
where x represents the number of items. How many items should be produced to minimize the cost?
Click here to see answer by Fombitz(32388)

Question 1011904: If x varies inversely as y and x = 2 when y = 8, find x when y = 4. PLEASE HELP

Click here to see answer by Theo(13342)

Question 1012164: what is the vertex directrix and focus of the equation (x+5)^2=4y
Click here to see answer by MathLover1(20849)

Question 1012150: you place a mat around a 25 inch by 21 inch painting as shown. the mat is twice as wide at the left and right of the painting as it is in top and bottom of the painting. the area of the mat is 714 square inches. how wide is the mat at the left and right of the painting? at the too amd bottom of the painting?
Click here to see answer by macston(5194)

Question 1012266: 5-2m
Click here to see answer by fractalier(6550)

Question 1012297: Arrange the circles (represented by their equations in general form) in ascending order of their radius lengths.
Tiles
x2 + y2 − 2x + 2y − 1 = 0
x2 + y2 − 4x + 4y − 10 = 0
x2 + y2 − 8x − 6y − 20 = 0
4x2 + 4y2 + 16x + 24y − 40 = 0
5x2 + 5y2 − 20x + 30y + 40 = 0
2x2 + 2y2 − 28x − 32y − 8 = 0
x2 + y2 + 12x − 2y − 9 = 0
Click here to see answer by ikleyn(52780)

Question 1012392: What is the equation of a line that is perpendicular to y=4x+5 and passes through the point (8,3)
Click here to see answer by Fombitz(32388)

Question 1012435: During World War 1, mortars were fired from trenches 3 feet down. the mortars had a velocity of 150ft/s use the formula h=-16^2+vt+s to deterrmine how long it will take for the mortar shell to strike its target?
Click here to see answer by Alan3354(69443)

Question 1012541: find a quadratic model in standard form for this set of values:
(0,0), (1,-5), (2,0)
Click here to see answer by Fombitz(32388)

Question 1012708: q^3-117q^2+117q=1, q=?
Click here to see answer by Alan3354(69443)

Question 1012775: Does this function have a minimum or maximum value and and then what's the value

Click here to see answer by macston(5194)

Question 1012775: Does this function have a minimum or maximum value and and then what's the value

Click here to see answer by ikleyn(52780)

Question 1012912: 14y^2+1=6y^2+7y
y=
Click here to see answer by fractalier(6550)

Question 1012912: 14y^2+1=6y^2+7y
y=
Click here to see answer by Boreal(15235)

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