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Question 886757: write an equation for the problems and solve : Mary and her father took an all day automobile ride, going 3 times as far in the afternoon as in the morning. In all they traveled 420 miles. How far did they travel in the morning?
Click here to see answer by Theo(13342)

Question 886756: write an equation for these problems and solve : seperate 92 into two parts, one of which is 1/3 of the other.
Click here to see answer by stanbon(75887)

Question 886920: monthly incomes of A and B are in the ratio9:11 and those of B and C are in the ratio 13:10.if monthly income of C is Rs.1430.then find incomes of A and B?
Click here to see answer by Theo(13342)

Question 886958: if x varies directly as y and x=9 when y=3 find x when y=12
Click here to see answer by Alan3354(69443)

Question 886960: the volume of a can of pork and beans is directly proportional to the height of the can. If the volume of the can is 300 in^3. When its height is 10.62 in, find the volume of a can with height 15.92 in
Click here to see answer by rfer(16322)

Question 886948: On a map of the United States, the distance between Seattle and Durango is 4.125 in. The two cities are actually 1238 miles apart. On this same map, what would be the distance between Chicago and El Paso, two cities that are actually 1606 mi apart?
Click here to see answer by rfer(16322)

Question 886953: On a world globe, the distance between New York and Cairo, two cities that are actually 5619 mi apart, is 8.5 in. On this same globe, how far apart Madrid and Rio de Janeiro two cities that are actually 5045 mi apart?
Click here to see answer by stanbon(75887)

Question 887134: Please help.
Find all real numbers that are not in the domain of the following function. Then give the domain in set notation. f(x)=2x/x^2+x-72
Click here to see answer by Theo(13342)

Question 887149: The force required to compress a spring. sites directly with the change in length of the spring. If a force of 20 newtons is required to compress a spring 2 centimeter, how much force is required to compress the same spring 10 centimeters?
Click here to see answer by Alan3354(69443)

Question 887146: Help! Katie Couric paid $1.35 sales tax on a blouse that was marked $18.00. At the same tax rate, how much sales tax would she pay for a $34.00 pair of pants?
Click here to see answer by Alan3354(69443)

Question 887427: Find the equation of the normal line y=6.5sin(2.5x)at x=3.145/4 radians
Click here to see answer by Edwin McCravy(20054)

Question 887955: solve the extended proportion x/9= 4/y= y/36 for x and y with x>0 and y>0
Click here to see answer by josgarithmetic(39613)

Question 888013: The data set represents the income levels of the members of a golf club. Find the probability that a randomly selected member earns at least $100,000.
INCOME (in thousands of dollars)
98 102 83 140 201 96 74 109 163 210
81 104 134 158 128 107 87 79 91 121
Click here to see answer by Fombitz(32388)

Question 888012: The data set represents the income levels of the members of a golf club. Find the probability that a randomly selected member earns at least $100,000.
INCOME (in thousands of dollars)
98 102 83 140 201 96 74 109 163 210
81 104 134 158 128 107 87 79 91 121
Click here to see answer by Fombitz(32388)

Question 888056: Please help me.
A boat goes 20 mph in still water, and the rate of the current is t mpg. (a) What is rhe rate of the boat when it travels upstream? (b) What is the rate of the boat when it travels downstream?
Click here to see answer by Alan3354(69443)

Question 888059: In California, the distance from Jackson to Lodi is about 40 mi as is the distance from Lodi to Manteca. Rico drove from Jackson to Lodi during the rush hour, stopped in Lodi for a high energy drink, and then drove onto Manteca at 10 mph faster. Driving time for the entire trip was 88 min. Find his speed Jackson to Lodi.
Click here to see answer by josgarithmetic(39613)

Question 888060: Rusty and Nancy Brauner are planting flats of spring flowers. Working alone, Rusty would take 2 hr longer than Nanvy to plant the flowers. Working together, they do the job in 12 hr. How long would it have taken each person working alone?
Click here to see answer by stanbon(75887)

Question 888092: I need help please.
My teacher gave us the answer, but I can not figure out how to work the problem.
A ball is projected upward from the ground. It's distance in feet from the ground in t seconds is given by s(t)= - 16t^2+128t. At what times will the ball be 213 ft from the ground? Answer. 2.4 sec, 6 sec.
Thanks
Click here to see answer by Alan3354(69443)

Question 888025: Of the 538 people who had an annual check-up at a doctor�s office, 215 had high blood pressure. Estimate the probability that the next person who has a check-up will have high blood pressure.
Click here to see answer by KMST(5328)

Question 888158: How do you factor this expression: z^4 - w^2 +w -z^2
Click here to see answer by Edwin McCravy(20054)

Question 888175: concept check for f(x) = a(x-h)^2+k, in what quadrant is the vertex if (a) h>0, k>0; (b) h>0, k<0; (c) h<0, k>0; (d) h<0,k<0?
Click here to see answer by josgarithmetic(39613)

Question 888235: after experimentation two pacific institute physics students find that when a bottle of California wine is shaken several times, held upright, and uncorked,its cork travels according to the function defined by s(t)=-16t^2 + 64t+3
Click here to see answer by jim_thompson5910(35256)

Question 888248: How do you factor out x^6 - y^6 using the difference of two cubes. I solved it using using difference of two squares, but I can't work out using cubes.
Click here to see answer by lwsshak3(11628)

Question 888271: Can u please help me find the integral of {1/2sqrt(2x^3) dx
Click here to see answer by Edwin McCravy(20054)

Question 888296: How do you factor out 9x^4 - 10x^2 + 1?

Click here to see answer by MathLover1(20849)

Question 888273: Can u please help me find the integral:

Click here to see answer by Edwin McCravy(20054)

Question 888254: How do you factor x^4 +x^2*y^2+y^4 into (x^2+xy+y^2)(x^2-xy+y^2)? Thank you.

Click here to see answer by Edwin McCravy(20054)

Question 888409: Steve Dalton can mow his lawn in 4 hours. His sister Diane can now the same lawn in 3 hours. How many hours will it take them to mow the lawn if they work together?
Click here to see answer by JulietG(1812)

Question 888408: Did I do this problem correctly?A motorcycle travels 196 miles in the same amount of time that a car travels 161 miles. The rate of the motorcycle is 10 miles per hour faster than the rate of the car. Find the rate of the car.
196/r+10=161/r
r=56
Click here to see answer by lwsshak3(11628)

Question 888407: Hoping someone can help me please.
In biology, a function defined by g(x)=12x/2+x gives the growth rate of a population for x units of available food. What amount of food would produce a growth rate of 4 units of growth per unit of food?
Click here to see answer by rothauserc(4718)

Question 888510: Please help.If w= sm-8/6m, w=1.4, and s=10, find m.
Click here to see answer by harpazo(655)

Question 888513: The formula B/1+rt=P is used to complete the amount, P, that must be deposited at an annual interest rate,r, to result in a balance B after t years. Solve the formula for r.
Click here to see answer by harpazo(655)

Question 888549: IS THIS CORRECT??
The force required to compress a spring varies directly with the change in length of the spring. If a force of 20 newtons is required to compress a spring 2 centimeters, how much force is required to compress the same spring 10 centimeters?
20/2=x/10
2x=5x20
2x=100
x=100/2
x=50???
Click here to see answer by Fombitz(32388)

Question 888526: Can anyone help me this with complex fraction please?
12/x-3/9/x^2-9
Click here to see answer by Fombitz(32388)

Question 888557: Please help.
during the 2001-2002 school year, the average ratio of teachers to students in private elementary schools was approximately 1 to 14. if one such private school has 554 students, how many teachers would be at the school if this ratio was valid for that school? round your answer to the nearest whole number.
Click here to see answer by rothauserc(4718)

Question 888574: Please help.
the amount of light (measured in foot-candles) produced by a light source varies inverse;y as the square of the distance from the source. If the illumination produced 1 m from a light source is 768 foot-candles, find the illumination produced 6 m from the same source.
Click here to see answer by stanbon(75887)

Question 888572: over a specified distance speed varies inversely with the time. If a odge viper on a test track goes a certain distance in ne-half minute at 160 mpg, what speed is needed to go the same distance in three-fourths minute?
Click here to see answer by ankor@dixie-net.com(22740)

Question 888544: Sketch the graph of the function defined by f(x)=-2/x-1. Give the equation of its vertical asymptote
Click here to see answer by Fombitz(32388)

Question 888687: When fuel tank of a car is 75% full, it contains 45 litres of petrol. the car comsumes 1 litre of petrol for every 12 km travelled and the cost of petrol is $ 1.02 per litre.
a) how much petrol does the car's fuel tank contains when full.
b) What distance can the car travel on a full tank of petrol.
how much is spent on petrol to travel 252km
Click here to see answer by josmiceli(19441)

Question 888797: Find the value of a,b, or c so that each equation will have exactly one rational solution. p^2+bp+25=0

Click here to see answer by richwmiller(17219)

Question 888814: Help!give a calculator approximation for square root 619.05 to the nearest thousandth.
Click here to see answer by Alan3354(69443)

Question 888799: a boat goes 20 mph in still water, and the rate of the current is t mpg. (a) what is the rate of the boat when it travels upstream? (b) what is the rate of the boat when it travels downstream
Click here to see answer by mananth(16946)

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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, 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