Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 1071427: Suppose that the price per unit in dollars of a cell phone production is modeled by p = $35 − 0.0125x,
where x is in thousands of phones produced, and the revenue represented by thousands of dollars is R = x · p.
Find the production level that will maximize revenue.
Click here to see answer by ikleyn(52777)  |
Question 1071438: Suppose that the price per unit in dollars of a cell phone production is modeled by p = $35 − 0.0125x, where x is in thousands of phones produced, and the revenue represented by thousands of dollars is R = x · p.
Find the production level that will maximize revenue.
________thousand phones
Click here to see answer by ikleyn(52777)  |
Question 1071732: I need to find an equation with a vertex of (10,10), and roots of 0 and 20. When I use the roots to find the equation, I get x(x-20) giving me x^2-20x. However, this does not have a vertex of (10,10). Using vertex form, I can find y=-10x^2+200x-990 but this does not have roots of 0 and 20. After playing around on a graph, I found out that the graph is -1/10x^2+2x. However, how do I get to this equation.
Click here to see answer by ikleyn(52777)  |
Question 1072012: Here's a math problem that I have and do not know how to do at all:
Suppose A and B are single digit positive integers chosen independently and at random. What is the probability that the point (a,b) lies above the parable y=ax^2-bx?
Click here to see answer by Fombitz(32388)  |
Question 1072260: Karen is throwing an orange to her brother Saul, who is standing on the balcony of their home. The height, h (in feet), of the orange above the ground t seconds after it is thrown is given by: h (t)=-16t^2+32t+4
If Saul's outstretched arms are 18 feet above the ground, will the orange ever be high enough that he can catch it?
Click here to see answer by Edwin McCravy(20054)  |
Question 1072305: A number of two digits is such that twice the tens digit is 8 less than seven times the unit digit. When the d?
A number of two digits is such that twice the tens digit is 8 less than seven times the unit digit. When the digits are reversed, the number is decreased by 9. What is the number?
Click here to see answer by stanbon(75887) |
Question 1072305: A number of two digits is such that twice the tens digit is 8 less than seven times the unit digit. When the d?
A number of two digits is such that twice the tens digit is 8 less than seven times the unit digit. When the digits are reversed, the number is decreased by 9. What is the number?
Click here to see answer by MathTherapy(10551)  |
Question 1072305: A number of two digits is such that twice the tens digit is 8 less than seven times the unit digit. When the d?
A number of two digits is such that twice the tens digit is 8 less than seven times the unit digit. When the digits are reversed, the number is decreased by 9. What is the number?
Click here to see answer by ikleyn(52777)  |
Question 1072376: After a baseball is hit, there are two equations that can be considered. One gives the height, hopefully (in feet), the ball is above the ground t seconds after it is hit. The second is the distance, so (in feet), the ball is from home plate t seconds after it is hit. A model of this situation is given by: h=-16t^2+70t+4 and s=44.5t.
Using this model, determine whether the ball will clear a fence which is 15 feet tall and is located 325 feet from home plate.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1072506: How do I write a quadratic equation given only the roots and the axis of symmetry?
The graph is extremely vague and cannot post it unfortunately.
The roots are 0 and 24
The axis of symmetry is x = 12
please help, thank you!
Click here to see answer by Alan3354(69443)  |
Question 1072656: An open-topped box is made from a piece of cardboard measuring 20cm by 25cm. The sides of the box are formed by removing a square from each corner. The base of the box has an area of 300cm^2.
a) Write an equation to represent the situation.
b) Use the quadratic formula to determine what amount needs to be removed from each side.
c) What are the dimensions of the box?
Click here to see answer by josgarithmetic(39617) |
Question 1072654: Jane's yard is 10m by 14m. She wants to build a rectangular garden in the centre of the yard. She wants the garden to have an area of 50m^2. The rest of the yard will be used as a walkway around the garden. How wide will the walkway be? Solve by completing the square and record your answer to the nearest tenth of a metre.
Click here to see answer by josgarithmetic(39617) |
Question 1072714: A player shoots a basketball from a height of 6 feet. The equation, h = -16t^2 + 25t + 6, gives the height, h , of the basketball after t seconds. Describe the height, rounded to the nearest tenth of a foot, of the basketball after 1.5 seconds, assuming no other player touches the ball.
Click here to see answer by Alan3354(69443)  |
Question 1073033: 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 -5. 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 josgarithmetic(39617) |
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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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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, 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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, 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