Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 380056: The problem is x(squared)-(minus)x-(minus)6
I figured out the solutions (x= -2, 3) by solving by factoring but when I try and do it by solving by the quadratic formula, I keep getting stuck. Can you please explain the steps to solve the problem using the quadratic formaula?
Click here to see answer by jim_thompson5910(35256)

Question 380058: I need help! This is due tomorrow! (It's 7th grade math by the way.)

The question says: Write an equation to find the value of x so that each pair of polygons has the same perimeter. Then solve.
1. A triangle has sides that say: x+6, x+9, and x+3. A rectangle beside it has sides that say x+4 and x+1.
2. A hexagon has sides that all read 5x. A triangle next to it has sides that say x+14, x+17, and 8x+9.
PLEASE help me!
Click here to see answer by Earlsdon(6294)

Question 380067: The problem is 6x(squared)+49x-45=0
I'm not sure if I'm solving this correctly, so could someone please help me step by step by either solving by factoring or solving by using quadratic formula. Thanks!
Click here to see answer by stanbon(75887)

Question 379912: The dimensions of Eric�s pool are 9 feet by 7 feet. He wants to build a walkway surrounding the pool so that the square footage of the walkway and pool is 143 square feet. How wide is one side of the walkway?
Click here to see answer by ankor@dixie-net.com(22740)

Question 380106: how would you solve a question if the asked you " solve thee equation a2+5a+2=0, giving your answer in 2 decimal places", i dont undersatnd how to give your answer in two decimal places
Click here to see answer by Alan3354(69443)

Question 380121: If the roots of x^2+kx+3=0 are real, find the smallest integral value of k.
How would you solve this?
Click here to see answer by stanbon(75887)

Question 380121: If the roots of x^2+kx+3=0 are real, find the smallest integral value of k.
How would you solve this?
Click here to see answer by richard1234(7193)

Question 380092: Multiply: (s + f)(s^2 - sf + f^2). I am not sure if I should factor the second equation out first.
Click here to see answer by robertb(5830)

Question 380165: Bob and Kevin both have square vegetable gardens. Kevin's garden is 10 feet longer than Bob's garden, and its area is four times the area of Bob's garden. What are the dimensions of Bob's garden?
Click here to see answer by mananth(16946)

Question 380170: how do I factor using a quadriclic formula
x2-3x+2=0
Click here to see answer by solver91311(24713)

Question 380312: solve the equation for y
10x-5y=25
Click here to see answer by ewatrrr(24785)

Question 380324: Hi All, Please can someone help

Derive the Maclaurin series for sin x as
sin x = x -x^3/3!+x^5/5! - ...
Hence write down the Maclaurin series for x sin x and sin 3x.
Thank You
Click here to see answer by richard1234(7193)

Question 380314: 6x-3y=-9
Click here to see answer by ewatrrr(24785)

Question 380346: -x^2+12x=36 by graphing the x intercept is?
Click here to see answer by ewatrrr(24785)

Question 380351: Please would someone help,
Obtain the Maclaurin series expansion about the point 0 for the function ln(x + 1) as
ln(x + 1) = x -x^2/2+x^3/3 - ...+ (-1)^n+1 x^n/n+ ...

Note that we cannot find a Maclaurin expansion of the function ln x since ln x does not exist at x = 0 and so cannot be differentiated at x = 0.

Thanks in advance
Click here to see answer by richard1234(7193)

Question 380364: - 3/2 and 2
Click here to see answer by Alan3354(69443)

Question 380367: I am so confused about my MAT 117 Appendix F. Can someone help me, any help would be appreciated.
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. ( is the day tickets go on sale).
Tickets = x2 - 6x - 16
a. Does the graph of this equation open up or down? How did you determine this?
b. Describe what happens to the tickets sales as time passes?
c. Use the quadratic equation 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.)
d. Will tickets peak or be at a low during the middle of the sale? How do you know?
e. After how many days will the peak or low occur?
f. How many tickets will be sold on the day when the peak or low occurs?
g. What is the point of the vertex? How does this number relate to your answers in parts e and f?
h. How many solutions are there to the equation x2 - 6x - 16? How do you know?
i. 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 richard1234(7193)

Question 380387: Please solve by factoring or by using the quadratic formula: 3x^2-11x+6=0

Click here to see answer by Jk22(389)

Question 380432: A plane traveled a distance of 800 miles and returned the same distance. If the rate returning is 40 miles per hour faster than the rate going, and if the total flight took 8 hours, how fast did the plane travel on the return trip?
Click here to see answer by stanbon(75887)

Question 380467: How can i sketch of a quadratic equation whose maximum is -3 who has no x- intercept , and with a=-1

Click here to see answer by stanbon(75887)

Question 378680: The roots of the equation x2+bx+c=0 where b and c are constants are �3
and 4. Find the values of b and c.

Click here to see answer by robertb(5830)

Question 380513: Y=2x+6

Click here to see answer by Fombitz(32388)

Question 380285: Estimate the roots of the equation by graphing. Round to the nearest tenth and write in set form x^2-6=0?

Click here to see answer by Fombitz(32388)

Question 380585: For which value or values of k, if any,does the quadratic equation in x,
(k-8)xx +. Kx. -1. =0
have exactly one solution
Click here to see answer by Jk22(389)

Question 380645: solve.
s^2+3s-54=0
Click here to see answer by ewatrrr(24785)

Question 380652: Factor completely.
9r^2-16
Click here to see answer by stanbon(75887)

Question 380643: solve.
r^2-6r-16=0
Click here to see answer by ewatrrr(24785)

Question 380636: im a right triangle, find the length of the side not given.
b=2, c-square root of 29
Click here to see answer by ewatrrr(24785)

Question 380656: Multiply and simplify by factoring. Assume that all ezpressions under radicals represent nonnegative numbers.
^3square root y^4 times ^3square root 81y^5
Click here to see answer by stanbon(75887)

Question 380658: Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, ax^2+bx+c=0
solution:8, only solution
Click here to see answer by stanbon(75887)

Question 380651: For the following equation, state the value of the discriminant and then descrebe the nature of the soluions.
12x^2-3x+2=0
Click here to see answer by ewatrrr(24785)

Question 380669: simplify by removing factors of 1.
n^2-81/(n+9)^2
Click here to see answer by stanbon(75887)

Question 380686: Evaluate the polynomial for x = -2.
2x^2-5x+5
Click here to see answer by ewatrrr(24785)

Question 380689: Factor
a^2 + 6a+9
Click here to see answer by ewatrrr(24785)

Question 380691: Convert to decimal notation.
8.64x10^7
Click here to see answer by rfer(16322)

Question 380682: solve
x^2+2x-4+0
Click here to see answer by ewatrrr(24785)

Question 380679: sove for x.
4x(x-1)-5x(x)=3
Click here to see answer by ewatrrr(24785)

Question 380701: subtract. simplify by collecting like radical terms if possible.
5 square root sign 12 - 4 square root sign 3
Click here to see answer by ewatrrr(24785)

Question 380702: subtract the polynomials.
(-11a^2+6a+4) - (6a^2+4)
Click here to see answer by ewatrrr(24785)

Question 380704: Mulitiply.
( r + 1/5)(r+1/3)
Click here to see answer by ewatrrr(24785)

Question 380700: Multiply.
(9x+4)(5x^2+5x+2)
Click here to see answer by ewatrrr(24785)

Question 380723: Find the vertex, the line of symmetry, and the maximum or minimum value of F(x). Graph the function.
f(x) +1/3(x+6)^2+5
Click here to see answer by ewatrrr(24785)

Question 380713: Rewrite teh following expression with positive exponents.
(12xy) ^-5/7
Click here to see answer by user_dude2008(1862)

Question 380697: Find the following.
^20 square root sign (-6)^20
Click here to see answer by user_dude2008(1862)

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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, 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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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