Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 1139714: an object is thrown upward from the top of a 64 foot building with an initial velocity of 48 feet per second. the height h of the object after t seconds is given by the quadratic equation h= -16t^2+48t+64. When will the object hit the ground?
Click here to see answer by ikleyn(52765)  |
Question 1139766: when an object is dropped from a building, the height of the object above the ground is given by the formula h=-4.9x to the 2nd power + 44.1 where h is the meters and x is the time in seconds. How long does it take for the object to reach the ground
Click here to see answer by ikleyn(52765)  |
Question 1139835: Two pipes are used to fill a pool. One pipe can fill the pool in 3 hours while the other pipe can fill the pool in 6 hours. The drain, which can empty the pool in 8 hours, was accidentally left open. How long will it take the pool tp fill completely?
Click here to see answer by ikleyn(52765)  |
Question 1139836: Two pipes are used to fill a pool. One pipe can fill the pool in 3 hours while the other pipe can fill the pool in 6 hours. The drain, which can empty the pool in 8 hours, was accidentally left open. How long will it take the pool to fill completely?
Click here to see answer by ikleyn(52765)  |
Question 1139838: In an experiment, a ball is released from a building. If the height of the ball after released is given by the equation h= -4.9t2+19.6t=686, where h is the height of the ball and t is the elapsed time after it is released, after how many seconds will the ball hit the ground?
Click here to see answer by ikleyn(52765)  |
Question 1139837: Suppose you were asked to place square carpet on the floor of a square room. You are told that three times the area of the square room is equal to the product of 6m and its perimeter. How much carpeting materials do you need to cover the entire floor?
Is the answer 64m2 correct?
Click here to see answer by ikleyn(52765)  |
Question 1139833: A carabao can plough a farmer's land in 6 hours. A tractor can plough the land in 4 hours. The farmer used the carabao to plough the land for 2 hours, after which, another farmer decided to help him using the tractor. How long did it take the farmers tofinish ploughing the land?
Click here to see answer by Theo(13342)  |
Question 1139880: A model rocket is launched with an initial velocity of 160 ft/s. The height, h, in feet, of the rocket t seconds after the launch is given by
h = −16t2 + 160t.
How many seconds after launch will the rocket be 380 ft above the ground? Round to the nearest hundredth of a second.
Click here to see answer by Alan3354(69443)  |
Question 1139880: A model rocket is launched with an initial velocity of 160 ft/s. The height, h, in feet, of the rocket t seconds after the launch is given by
h = −16t2 + 160t.
How many seconds after launch will the rocket be 380 ft above the ground? Round to the nearest hundredth of a second.
Click here to see answer by ikleyn(52765)  |
Question 1139972: The depth d of a liquid in a bottle with a hole of area 0.5 cm2 in its side can be approximated by
d = 0.0034t2 − 0.52518t + 20,
where t is the time since a stopper was removed from the hole. When will the depth be 14 cm? Round to the nearest tenth of a second.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1140363: A cargo service operates by running a ship between Port A and Port B, a distance of 70km, at a constant speed of V kilometres per hour. For a given V the cost per hour of running the ship is 9000 + IOV^2 dollars. Find the value of V which minimises the cost of the trip.
Click here to see answer by greenestamps(13198)  |
Question 1140675: a farmer sells sheep at $75 a head. the sheep cost $x each. the farmer finds she has made x% profit on the sale of the sheep. find x
I know the answer is 50 but i can't figure it out how they manage to find that number
Click here to see answer by ikleyn(52765)  |
Question 1140972: In two or more complete sentences, compare the number of x-intercepts in the graph of f(x) = x^2 to the number of x-intercepts in the graph of g(x) = x^2 -7. Be sure to include the transformations that occurred between the parent function f(x) and its image g(x).
Click here to see answer by Alan3354(69443)  |
Question 1140972: In two or more complete sentences, compare the number of x-intercepts in the graph of f(x) = x^2 to the number of x-intercepts in the graph of g(x) = x^2 -7. Be sure to include the transformations that occurred between the parent function f(x) and its image g(x).
Click here to see answer by MathLover1(20849)  |
Question 1141219: A football is kicked at ground level with initial velocity of 64 feet per second.
1. Y=-16t^2 + 64t
2. Y= -16(t-2)^2 + 64
3. Y=-16t(t-4)
For each of the following situations determine which form of the equation would provide with the information needed in the most efficient manner.
a. The height after 3 seconds is _____.
b. The time when the football hits the ground is _____.
C. An estimate of the time when the football is 40 feet high is ____.
Click here to see answer by Boreal(15235)  |
Question 1141353: In two or more complete sentences, compare the number of x-intercepts in the graph of f(x) = x^2 to the number of x-intercepts in the graph of g(x) = x^2-7. Be sure to include the transformations that occurred between the parent function f(x) and its image g(x).
Click here to see answer by josmiceli(19441)  |
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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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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, 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