Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 631381: In vertex form, how will a, h and k help us in graphing a quadratic function?
Click here to see answer by richard1234(7193)

Question 631568: I need to find some examples of quadratic equations and their solutions?

Click here to see answer by Edwin McCravy(20054)

Question 631582: Amir pitched a baseball at an initial height of 5.9 feet with a velocity of 73.16 feet per second.
About how long will it take the ball Amir pitched to hit the ground?
A) 4.66 seconds
B) 2.94 seconds
C) 2.35 seconds
D) 1.47 seconds
Click here to see answer by Alan3354(69443)

Question 631668: Find the real zeros of the function P(x)=3(x+8)^2-(x+8)+4
Click here to see answer by lwsshak3(11628)

Question 631778: Amir pitched a baseball at an initial height of 5.9 feet with a velocity of 73.16 feet per second. About
how long will it take the ball Amir pitched to hit the ground?
a) 4.66 seconds
b) 2.94 seconds I assume he pitched the ball horizontally.
c) 2.35 seconds
d) 1.47 seconds
Click here to see answer by stanbon(75887)

Question 631777: a man spends Rs 5 on bar chocolates. had they been 2 and a half paisa, he would have bought 10 more. how many did he buy?
Click here to see answer by richwmiller(17219)

Question 631780: when the price of an orange is reduced by 50 paise, i find that by paying an extra Rs 3, i can buy 3 dozen instead of 2 and a half dozen. how much did an orange cost before the reduction in price?
Click here to see answer by richwmiller(17219)

Question 631890: Solve by Completing the Square:
2x^2 - 3x + 1 = 0

This problem is troubling me ! Thank you for your time and help !! I really appreciate it :) Please show work through steps so I have a thorough understanding. THank you so much !
Click here to see answer by ewatrrr(24785)

Question 631859: Solve for x. Enter your answer below as an improper fraction in lowest terms, using the slash ( / ) as the fraction bar.
Link to problem:
http://goo.gl/H6wId

Click here to see answer by Tatiana_Stebko(1539)

Question 631914: I dont know how to use this formula x= -b + or - the square root of b2 -4ac over 2a for this equation y= x2 -25
Click here to see answer by ankor@dixie-net.com(22740)

Question 631928: The measured dimensions of a rectangle are 8m by 4m to the nearest whole unit. Find the minumum and maximum possible areas of the rectangle
Click here to see answer by 55305(86)

Question 632126: Solve the inequality algebraically.
7x-6>=-3x^2
The solution set is __?
(Type your answer in interval notation. Use integers or fractions for any numbers in the expression. Simplify your answer.)
Click here to see answer by blacksaibot(4)

Question 632201: Can someone please help me with the first five questions to ind of give me a start on how to dothis assignment....Pleas and thank you in advance.

Suppose you are managing sales of tickets for a large concert venue. In order to anticipate staffing needs in the box office, you must gather information about projected ticket sales for an upcoming concert. The expected number of ticket sales for each day x is given by the following equation:
tickets=-5x^2+18x+9

PROBLEM SHOW YOUR SOLUTIONS HERE
1. Does the graph of this equation open up or down? How do you know?
2. Describe what happens to the ticket sales as time passes.
3. Use the quadratic formula to determine the last day that tickets will be sold.
Note: Write your answer in terms of the number of days after ticket sales begin.
4. Will ticket sales be at a peak or a low during the middle of the sale? How do you know?
5. After how many days will the peak or low (middle of the sale) occur?
6. How many tickets will be sold on the day when the peak or low (middle of the sale) occurs?
7. What is the point (ordered pair) of the vertex? How does this point relate to your answers to problems 5 and 6.
8. How many real solutions are there to the equation ? How do you know?
9. What do the solutions to the equation in #8 represent? Is there a solution that doesn�t make sense? If so, in what ways does the solution not make sense?
Click here to see answer by solver91311(24713)

Question 631740: 5x+4x2-8=2x(4+2x)
Click here to see answer by Tatiana_Stebko(1539)

Question 632250: How do you solve this quadratic equation?
x^2 − 16 = 0
Click here to see answer by richwmiller(17219)

Question 632274: i. f(x)=x^2-4x+4
ii. f(x)=3x^2-4x^2+2
Click here to see answer by reviewermath(1029)

Question 632318: Solve for x. 2(x-4)-(x+2)=(x+2)(x-4)
Click here to see answer by reviewermath(1029)

Question 632318: Solve for x. 2(x-4)-(x+2)=(x+2)(x-4)
Click here to see answer by mananth(16946)

Question 632408: I am having a very difficult time with quadratic equations. Can someone please help me with this question? It is greatly appreciated!
What does the final term in the quadratic equation x2 + 2x - 7 mean, and how do we find this term on the graph?
Click here to see answer by solver91311(24713)

Question 632503: s^2=3 +s(1-4s)
solve the given quadratic equation , using the quadratic formula?
Click here to see answer by richwmiller(17219)

Question 632509: 3x^2-3x-2=0
Click here to see answer by stanbon(75887)

Question 632509: 3x^2-3x-2=0
Click here to see answer by richwmiller(17219)

Question 632507: find such that y=x^2-16x+c has exactly one real root
Click here to see answer by stanbon(75887)

Question 632502: Ok here is the equation 2(x-4)-(x+2)=(x+2)(x-4)
I am supposed to solve for x since none of the other equations work I am to put it into ax^2+bx+c=0 form. My question is how does it go from 2(x-4)-(x+2)=(x+2)(x-4) to x^2-3x+2=0? I know the rest of the problem this is the only part I am having difficulty understanding.
Click here to see answer by richwmiller(17219)

Question 632707: Can you compute the discriminant of the equation x^2+12x+36=0
Click here to see answer by jim_thompson5910(35256)

Question 632702: Please help me solve the quadratic equation 3x^2+19x-14=0 using the quadratic formula.
Click here to see answer by jim_thompson5910(35256)

Question 632712: Without solving the equation (or factoring) determine the solution to the equation x^-6x=0 by using only the graph. Can you help me? Thanks
Does it have a maximum or minimum
What are the coordinates of the vertex in (x,y) form
What is the equation of the axis of symmetry for this parabola
Click here to see answer by Alan3354(69443)

Question 632734: Please help me to compute the discriminant and determine the number and type of solution for the equation 8x^-9x+2=0. What is the discriminant
Click here to see answer by reviewermath(1029)

Question 632782: Can someone please help me wih this problem because I am so confused. Ineed to now how to find the vertex, the line of symmetry, and the maximum or minimum value of f(x). Graph the function also. Please help me and thanks so much in advance.
f(x)=(1/4)(x+8)^2+8
Click here to see answer by reviewermath(1029)

Question 632856: Solve:
Square Root of (x+3) = 2x
only (x+3) is under the Square Root
Thank you for your help!
Click here to see answer by MathTherapy(10549)

Question 632875: can you help me solve this, please.
9/2+5/2y=2y-2
Click here to see answer by ankor@dixie-net.com(22740)

Question 633000: Solve the equation: x-4=5/x
Click here to see answer by Maths68(1474)

Question 632863: Proove: (x^2+y^2)^2=(x^2-y^2)^2+(2xy)^2
Click here to see answer by richard1234(7193)

Question 633082: I am to find the vertex, the line of symmetry, as well as the maximum or minumum value of f(x). Graph the function.
I am sorry but I just am not comprehending how to do this. I have looked at problems in the book, on here and as sad as it sounds I just am comprehending it. Please help me
f(x)= -(x+1)^2-9
Click here to see answer by reviewermath(1029)

Question 633130: Find a quadratic equation with integral coefficients having the given roots
i√5, -i√5
Please show me all steps so that I can do this myself. Thank you in advance

Click here to see answer by reviewermath(1029)

Question 633140: If X= 6+8+12
Y= 9+13+7
So what is the value of X square Y square.

Click here to see answer by ewatrrr(24785)

Question 633141: Jarrod is having a problem with rabbits getting into his vegetable garden so he decideds to fence it in. The length of the garden is 9 feet more than 6 times the width. He needs 74 feet of fencing to do the job.
What is the length of the garden?
Click here to see answer by ewatrrr(24785)

Question 633145: I don not understand this question at all!
1.Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to tour and your city is the first stop on the tour. You need to supply information about projected ticket sales to the box office manager. The box office manager uses this information to anticipate staffing needs until the tickets sell out. You provide the manager with a quadratic equation that models the expected number of ticket sales for each day x. (x=1 is the day tickets go on sale).
tickets=-0.1x^2+12x+11
1a.Does the graph of this equation open up or down? How did you determine this?
1b.Describe what happens to the tickets sales as time passes.
1c.Use the quadratic equation to determine the last day that tickets will be sold.
1d.Will tickets peak or be at a low during the middle of the sale? How do you know?
1e.After how many days will the peak or low occur?
1f.How many tickets will be sold on the day when the peak or low occurs?
1g.What is the point of the vertex? How does this number relate to your answers in parts e. and f?
1h.How many solutions are there to the equation ? How do you know?
1i.What do the solutions represent? Is there a solution that does not make sense? If so, in what ways does the solution not make sense?

Click here to see answer by ewatrrr(24785)

Question 633172: Good day! Sorry I posted my question under the "quadratic equations" category, this one is actually a physics question so I am posting it again, here it goes:
A woman on the ground sees an airplane climbing at an angle of 35 degrees above the horizontal. She gets into her car and by driving at 70 miles/hour is able to stay directly below the airplane. What is the airplane's speed?
Click here to see answer by josmiceli(19441)

Question 633166: solve 2y^2=6y-20 by completing the square
Click here to see answer by ewatrrr(24785)

Question 633176: A pleasant day to the dear tutors, please help me with this question:
A cabinet is pulled across a cemented floor with a rope that makes an angle of 35 degrees with the floor. What is the component of the force parallel to the floor if a 90 Newton force is exerted?
Thank you so much!
Click here to see answer by solver91311(24713)

Question 633220: A carpenter is building a rectangular room with a fixed perimeter of 340 ft. what dimensions would yield the maximum area? what is the maximum area?
The length that would yield the maximum area is_____ft.
Click here to see answer by solver91311(24713)

Question 633161: What should be added to both sides of the given equation to complete the square?
x^2-5x=4.
Click here to see answer by ewatrrr(24785)

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, 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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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