Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 222647: How do I find an equation using slope and y-intercept
Click here to see answer by rfer(12657)

Question 222640: How do I fing an equation using slope and y-intercept
Click here to see answer by Alan3354(30993)

Question 222684: Factor completely. 7x^7-56x^6+28x^5
Thanks!
Click here to see answer by jim_thompson5910(28550)

Question 222686: Multiply. (b+(1/3))(b+(1/3))
Thank you!
Click here to see answer by jim_thompson5910(28550)

Question 222934: Ive got to solve these problems using Quadratic Equation, but obviously I cant. Help me out, thanks!
a) The product of the second and third consecutive integers is 7 more than the first. Find the numbers.
b) If the area of the triangle is 240 square meters and one leg is 8 more than the other leg, find the (sorry, n/a. please fill in)?
Click here to see answer by edjones(7569)

Question 222963: Find the value of 'm' such that the equation 4x^2-8mx-9=0 has 1 root as the negative of the other
Click here to see answer by jsmallt9(3296)

Question 222958: I need help for this problem. First up, I cant seem to remember what the problem wants me to look for. And I also need to know the answer for that missing question. Here it is: "If the area of the triangle is 240 square meters and one leg is 8 more than the other leg, find the (*)?" THANKS.
Click here to see answer by Theo(3458)

Question 222972: √(121/x2)
Click here to see answer by stanbon(57303)

Question 223003: What would the quadratic eqation be with the roots 2/3 and 4. i got this question on a test and i didnt know how to do it can someone help please?
Click here to see answer by drj(1380)

Question 223641: Ok, so I am asked to write a quadratic equation based on the answer given. I have already done it, but someone is telling me I am wrong, and when I did it again, I came up with a completely different answer! So confused. Anyway, the problem is:
3i , -3i
Here are my original steps:
x-3i =0 or x+3i =0
(x-3i ) (x+3i ) =0
-9+2=0
+9+2=0
+11=0
The second time around I multiplied 9 and 2, coming up with +18=0
I am kind of confused on what to do with the square root value. Do you add it to the equation, as I did the first time, or do you multiply, as I did the second time?
Thank you.
Click here to see answer by tutor_paul(490)

Question 223653: Given:y=2(x-5)^2+63, what is the axis of symmetry?
Click here to see answer by tutor_paul(490)

Question 223694: the difference between the cubes of two consecutive even numbers is 296.find the number?
Click here to see answer by Alan3354(30993)

Question 223667: An artist wants her painting to be in the shape of a golden rectangle. If the length of the painting is 36 inches, then what should be the width?
Click here to see answer by scott8148(6628)

Question 223742: x^2-2x-13=0
Click here to see answer by drj(1380)

Question 223760: Please help me solve this Quadratic equation.
9x^2+6x-4=0
I have solved it down to -6 sqrt 180 / 18.
this is also the same as your sight gave me, but the answer key says this.
-1 sqrt 5 / 5
Click here to see answer by brich(7)

Question 223757: I am stumped on this one. I have to Find all real solutions based on a fractional exponent?
2x-5 +2=0
The book wants me to solve the problem using substitution. However, I can't find an equation that would make sense to me.
I am letting = 5 and w = x
I then come up with -5 +2w+2=0
This is where I draw a blank. I can't find a quadratic equation that will make that statement above true to continue solving.
I am assuming that I am doing this wrong, but beating my head against the book for the last hour now has only produced a squishy sound behind my skull! lol
Thank you in advance for help.
Kevin
Click here to see answer by Alan3354(30993)

Question 223768: x^2 - 4x - 5 =
x^2 + 18 - 11x =
Click here to see answer by edjones(7569)

Question 223839: How do you solve a problem with a negative under a radical sign. For example the square root of -20. is the answer 20i?
Click here to see answer by Alan3354(30993)

Question 223839: How do you solve a problem with a negative under a radical sign. For example the square root of -20. is the answer 20i?
Click here to see answer by drj(1380)

Question 223845: m^2 + 2m - 5 = 0. I appreciate your time on this matter thank you, Don..
Click here to see answer by drj(1380)

Question 223846: (x-5)(x+2)=6. Thank you for your time, Don...
Click here to see answer by checkley77(12569)

Question 223846: (x-5)(x+2)=6. Thank you for your time, Don...
Click here to see answer by drj(1380)

Question 224027: the bottom of a box is supposed to be a rectangle with the perimeter of 36 cm. The box must be 4 cm high. what dimensions give the maxium volume?
Click here to see answer by drj(1380)

Question 224025: The bottom of a box is supposed to be a rectangle with the perimeter of 36 cm. The box must be 4 cm high. what dimensions give the maximum volume?
Click here to see answer by drj(1380)

Question 223983: please help me with this problem?
directions: for each quadratic function, find the x-intercepts, if they exist.
Problem:
f(x)= -2x^2-6x+5
Click here to see answer by drj(1380)

Question 223995: Write a quadratic function having the given solutions: -5,3.
Click here to see answer by solver91311(16877)

Question 223995: Write a quadratic function having the given solutions: -5,3.
Click here to see answer by drj(1380)

Question 224085: Solve the equation by finding the square root of both sides:

Click here to see answer by drj(1380)

Question 224186: I am trying to solve this equation
C(x)=2x^2-57x + 26=0
X=50
I have tried putting the 50 in the x variable but am not sure the results
C(50)= 2(50)^2 -57(50)+ 26=
Click here to see answer by RAY100(1637)

Question 224251: A right triangle, has one side that equals to 120m. The total perimeter of the triangle is 300m. What is the measurement of the other side and the hypotneuse?
Click here to see answer by solver91311(16877)

Question 224404: The value of a share of a company can be represented by V(x) = x2 – 6x + 13, where x is the number of months after January 2004. What is the lowest value V(x) will reach, and when did that occur?
Click here to see answer by stanbon(57303)

Question 224400: Assume the profit earned by an artist in any given year is governed by the function: P(n) = -2n2 + 20n – 30 where n represents the number of paintings sold and P (in thousands of dollars) represents the profit. How many paintings should be sold to create a maximum profit? What is the maximum profit?

Click here to see answer by stanbon(57303)

Question 224474: In the function f(x) = ax2 + bx + c, the minimum or maximum value occurs where x is equal to -b/(2a). How is that value derived?

Click here to see answer by rapaljer(4667)

Question 224402: The height of an object thrown in the air is given by h = t2 – 7t + 3, where h is in feet and t is the time in seconds the object has been in motion. At what time (to the nearest tenth) is the object 10 feet in the air?
Click here to see answer by nerdybill(6958)

Question 224495: can the solution of a quadratic equation with integer coefficients include one real and one imaginary number? why or why not?
Click here to see answer by stanbon(57303)

Question 223546: um hello i was wondering what 2.6345 is rounded to the tenth and hunderth and thousandth??? thanks for the help if you respond
Click here to see answer by Alan3354(30993)

Question 224467: The height of an object thrown in the air is given by h = t2 – 7t + 3, where h is in feet and t is the time in seconds the object has been in motion. At what time (to the nearest tenth) is the object 10 feet in the air?
Click here to see answer by drj(1380)

Question 224634: 25x/5-7x=12
Click here to see answer by drj(1380)

Question 224707: Write a quadratic function having the given solutions: -5, 3
How do I do this?
Click here to see answer by drj(1380)

Question 224723: can the solution of a quadratic equation with integer coefficients include one real and one imaginary number? why and why not?
Click here to see answer by Alan3354(30993)

Question 224674: A rectangle has a perimeter of 100 feet. Express its area in terms of one of its sides, x
Click here to see answer by ankor@dixie-net.com(15648)

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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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