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Question 930232: NASA launches a rocket at t = 0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t) = -4.9t^2 + 124 t + 346.
Assuming that the rocket will splash down into the ocean, at what time does splashdown occur?
The rocket splashes down after how many seconds?
How high above sea-level does the rocket get at its peak?
Click here to see answer by Alan3354(69443)

Question 930432: Please help me solve this: A penny is thrown up in the air from a building. Its height in feet after x seconds is given by:
a) when does it reach it's max height?
b) what is its max height?
c) when does it hit the ground?
For (c) I started to solve it with the quadratic formula but wasn't getting a sensible answer. I'm not sure how to set up the other two.

Click here to see answer by KMST(5328)

Question 930554: Speed of the car is 47.52 km / hr. A lorry wheel is rotating at 400 RPM. What is the radius (in cm) of a lorry wheel if the lorry has a same speed with car?
Click here to see answer by lwsshak3(11628)

Question 930549: Lily estimated that she was able to answer correctly 35 questions out of 40 questions in a test. However, she only scored 75% for the test. Find the difference between the actual number of questions that she answered correctly and the estimated number of questions she thought she was able to answer.
Click here to see answer by ewatrrr(24785)

Question 930550: Three men dine in a restaurant. The bill is RM30 and each man hands the waiter RM10. Later, the cashier realizes that there has been a mistake, the bill is RM25. The waiter is asked to return the men RM5. But it suddenly occurs to him that RM5 will be hard to divide among three people, so he keeps RM2 for himself and returns each of the men RM1. This means the men pay RM9 each, making it a total of RM27, and plus the Rm2 the waiter keeps, the final amount is RM29. Where has the extra RM1 gone? Or are we forced to conclude that RM30 = RM29?
Click here to see answer by ptaylor(2198)

Question 930649: ackson eats cookies every day. Below is the patter of cookies he has eaten this week.
Day 1 2 3 4 5 6 7
(an) Cookies 3 5 7 9 11 13 15
Write an explicit rule to show the number of cookies Jackson eats if he continues on the pattern.
Click here to see answer by Alan3354(69443)

Question 930687: Please help!!!!
Solve by the addition method.
4x-5y=22 and x+2y=-1
Click here to see answer by MathLover1(20849)

Question 930698: Pls help!!
Solve by the addition method
4x+3y=15 and 2x-5y=1
Click here to see answer by MathLover1(20849)

Question 930734: Solve by the addition method
x+y=4 and 2x+y=5

Click here to see answer by Alan3354(69443)

Question 930787: Please help me I'm lost
solve by the addition method:
x+y=4 and 2x+y=5
Click here to see answer by MathTherapy(10549)

Question 930898: Rony has 2 more dimes in his pocket than Briana. The total value of their dimes is 2.40. How many dimes does each one have? Create an equation for this problem to find your answer
Click here to see answer by stanbon(75887)

Question 930899: Rony has 2 more dimes in his pocket than Briana. The total value of their dimes is 2.40. How many dimes does each one have? Create an equation for this problem to find your answer
Click here to see answer by jamiya(9)

Question 930920: Please help
a boat goes 24 miles upstream in 2 hours. it goes 36 miles downstream also in 2 hours.
Click here to see answer by Alan3354(69443)

Question 931318: On Saturday at the Boxerville Carnival, 800 people attended. On Sunday, 650 people attended. On Monday, 250 people attended. On Tuesday, 350 people attended. How many people attended the Boxerville Carnival on the weekend?
A. Too little
B. Too much
Click here to see answer by awesome1234(1)

Question 931425: A rocket is launched from the top of a cliff that is 48 feet per second. The height, h, of the rocket after t seconds is given by the equation.
h=-16ft^2+48t+48. How long after the rocket is launched will it strike the ground? Round to the nearest tenth of a second, if necessary.
Click here to see answer by Alan3354(69443)

Question 931445: Two people can swing on a trapeze at the same time as long as their total weight is less than 500 pounds. Joe weighs 240 pounds and is 6 feet tall. Jake weight 250 pounds and is 32 years old. Can Joe and Jake swing on the trapeze at the same time?
A. Too little
B. Too much
Click here to see answer by TimothyLamb(4379)

Question 931460: if a ball is thrown vertically up from the ground, its height h after t seconds is given by h(t)=96t-16t^2
A. how long does it take the ball to return the ground.
B. how long does it take the ball to pass through a height of 80ft on the way back down>
Click here to see answer by Alan3354(69443)

Question 931753: a study confirms that for every 100 citizens 40 are overweight, there are 264 million citizens in 2001, how many would be considered overweight?
Click here to see answer by TimothyLamb(4379)

Question 931751: lisa studies 9 hours for a test and gets a score of 76. how many hours would she have to study to get a score of 94? assume a linear relationship between the number of hours she studies and her score on tests.
Click here to see answer by TimothyLamb(4379)

Question 931867: Please help:
Find the LCM of the expression.
10x^4y^2
15x^3y
8x^2
4x^2+8x
Click here to see answer by Alan3354(69443)

Question 932063: i am not a student but a horse rider and i want to know if i have an 80ft. diameter round pen how many times would the horse need to go around the round circle to equal a mile. thankyou mary jane

Click here to see answer by josgarithmetic(39613)

Question 932076: there are 1000 students, 40 teachers, and 5 administrators. if the school grows to 1200 students and the ratios maintained, how many administrators are needed?
Click here to see answer by TimothyLamb(4379)

Question 932062: Use Stoke's Theorem to compute \oint _{C} F\cdotdr where C is the intersection of the plane x+y+z=10 with the cylinder x^2+y^2=4, traversed in a clockwise manner as seen from the orgin.

Click here to see answer by Fombitz(32388)

Question 932204: A person was in charge of ordering 35 pizzas for an office party. He ordered three types of pizza, cheese, pepperoni, and supreme, the cheese cost 9$ each, pepperoni cost 12$ each, and supreme cost 15$ each. He spent exactly twice as much money on the pepperoni pizza as he did the cheese pizza. If the person spent a total of 420$ how much was each type of pizza
Click here to see answer by TimothyLamb(4379)

Question 932288: Raquel worked 40 hrs this week and was paid $400. She gets paid time and a half for every hour over the 40 hrs she works. If Raquel is scheduled to work 55 hrs next week at the same pay rate, how much will she get paid?

Click here to see answer by TimothyLamb(4379)

Question 932271: Cassandra wants to determine the weight of her two dogs, Mimi and Mitzi. However, neither dog will stand on the scale by herself. Cassandra, Mimi, and Mitzi altogether weigh 175 pounds. Cassandra and Mimi together weigh 143 pounds. Cassandra and Mitzi together weigh 139 pounds. Set up and solve a system of equations to find out how much Cassandra, Mimi, and Mitzi each weigh.
Click here to see answer by TimothyLamb(4379)

Question 932343: A square and a circle both made out of wire enclose the same area, 18.45cm squared. When the wires are flattened out, which is longer and by how much? Round to two decimal places.
Click here to see answer by ankor@dixie-net.com(22740)

Question 932620: What is the y intercept of -3 and slope of 1/2
Click here to see answer by Fombitz(32388)

Question 932645: Bob�s Bicycle Shop assembled some tricycles and go-carts. The total number of tricycles and go-carts was 30, and Bob used 103 wheels in all. How many go-carts did Bob make?
Click here to see answer by TimothyLamb(4379)

Question 932717: there were 12 toys in bag p and 66 toys in bag q. After mrs murry added the same number of toys to each bag, bag q had 3 times as many toys as bag p, How many toys did she add to each bag?
Click here to see answer by TimothyLamb(4379)

Question 932742: Pat Summers wins $200,000 in the Louisiana state lottery. He invests part of the money in real estate with an annual return of 3% and another part in a money market account at 2.5% interest. He invests the rest, which amounts to $80,000 less than the sum of the other two parts, in certificates of deposit that pay 1.5%. If the total annual interest on the money is $4900,how much was invested at each rate?
Click here to see answer by TimothyLamb(4379)

Question 932855: what does "what problem did he or she identify" and "what action did he or she take to express his or her dissent" mean plss help answering and thank you
Click here to see answer by tutoringisfun(17)

Question 932888: if we use 156 metric tonnes of feed to produce 92163 kgs of milk, then how much grams we to produce 1 kg of milk?
Click here to see answer by stanbon(75887)

Question 932931: How much wood could a woodchuck chuck if a woodchuck could chuck wood?
Click here to see answer by Alan3354(69443)

Question 933033: The volume of a rectangular swimming pool is v=(x^3-36x^2+380x-1200. If the depth of the pool is (x-6) feet find the length and width using synthetic division.
Click here to see answer by ewatrrr(24785)

Question 933140: Simone has 16 players on her soccer team. There are 6 more boys than girls. How many boys and girls are there?
I have spent hours on this problem and for some reason I can't understand it. :(
Click here to see answer by Alan3354(69443)

Question 933190: if 1/17=0.0588235294117647...., determine the 614th digit of the decimal expansion.
Click here to see answer by MathLover1(20849)

Question 933248: the little girl drank the first part of her bottle in 3 minutes. she drank the second part in 5 minutes. she drank the last part in 2 minutes. what fraction of an hour did the little girl take to drink her bottle of milk?
Click here to see answer by stanbon(75887)

Question 933679: What is the equation for: three less than one-half a number is -71
Click here to see answer by MathLover1(20849)

Question 933910: Using a manufacturer's coupon, Lucy bought 2 cartons of orange juice and received a third carton free. The price of each carton was $3.59. What was the cost per carton with the coupon? Round to the nearest cent.
Click here to see answer by rfer(16322)

Question 934155: An artist sells 20 paintings for $7.Some cost 14 cents and rest 12 cents each.how many of each type of painting has he sold?

Click here to see answer by ewatrrr(24785)

Question 934165: Mike and Joe take 3 3/4 hrs to do a job. Joe alone takes 10 hrs to do the same job. How long would it take Mike to do the same job alone?
Click here to see answer by stanbon(75887)

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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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