Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 172398: please help me I can up with three crazy answers.
Translate the following into a quadratic equation, and solve it: The length of a rectangular garden is three times its width; if the area of the garden is 75 square meters, what are its dimensions?
also can you show me how to check the answer after solving the problem.

Click here to see answer by jim_thompson5910(28708)

Question 172405: Find the x-intercepts. y = x2 + 3x – 10

Click here to see answer by jim_thompson5910(28708)

Question 172409: What is the equation y=x^-14x+50 in vertex form and what is the vertex?
Click here to see answer by jim_thompson5910(28708)

Question 172402: I need someone help I'm totally stuck. please please help. Thank you.
What type of solution do you get for quadratic equations where D < 0? Give reasons for your answer. Also provide an example of such a quadratic equation and find the solution of the equation.
Click here to see answer by user_dude2008(1861)

Question 172418: 3x^2+2x=-5-4x

Click here to see answer by jim_thompson5910(28708)

Question 172399: please help me I'm coming up with crazy answer.
Determine whether the following equations have a solution or not? Justify your answer.
(3)1/2y2 - 4y - 7(3)1/2 = 0

thank you in advance.
Click here to see answer by jim_thompson5910(28708)

Question 172423: solve by factoring alg 2
6x^2-24=0
Click here to see answer by jim_thompson5910(28708)

Question 172428: Find the vertex. y = x2 – 20x + 4

Click here to see answer by jim_thompson5910(28708)

Question 172430: Is this trinomial a perfect square? x2 – 12x + 36
Please show work as to how it is or isn't.

Click here to see answer by Earlsdon(6294)

Question 172419: can you help me i have test questions tomorrow and need to know how to do this
solve by factoring.
x^2-18x+32=0
Click here to see answer by jim_thompson5910(28708)

Question 172427: tutors i need help with alg 2 i have a 72 in the class because i couple bad test scores and my teacher gave us the questions from the test so can you please help me
i need to know how to find the intercept , find the vertex and graph it in t chart form every time i do the chart it doesnt look right
the problem is y=2(x+4)(x+2)
Click here to see answer by Earlsdon(6294)

Question 172425: HELP!!
The length of a rectangle is 4 cm more than 3 times its width. If the area of the rectangle is 95 cm2, find the dimensions of the rectangle to the nearest thousandth.

Click here to see answer by praseenakos@yahoo.com(507)

Question 172406: The base of a 15-ft ladder is 8 feet away from the wall. How far above the floor is the top of the ladder? Give answer to the nearest thousandth.

Click here to see answer by Alan3354(31518)

Question 172517: Question provided by co-worker I'm trying to help...
Given the equation
x^2 + 6sqrt2x + y^2 - 4sqrt5y = 3
complete the square for both x and y and find the equation of the circle.
A. (x + 3sqrt2)^2 + (y - 2sqrt5)^2 = 13
B. (x + 3sqrt2)^2 + (y - 2sqrt5)^2 = 35
C. (x + 3sqrt2)^2 + (y - 2sqrt5)^2 = 38
D. (x + 3sqrt2)^2 + (y - 2sqrt5)^2 = 10
I can usually help her figure things out, or we at least muddle through them together. It's been so long, though, that I'm lost on this on.
I thank you, and she thanks you.
Click here to see answer by stanbon(57962)

Question 172401: I need someone help I'm totally stuck. please please help. Thank you.
What type of solution do you get for quadratic equations where D < 0? Give reasons for your answer. Also provide an example of such a quadratic equation and find the solution of the equation.
Click here to see answer by Mathtut(3670)

Question 172556: I have a question im having real trouble with so i could use some help badly its a 2 part question
Suppose the height of this motorcycle is modeled by H=-20t + 45+ where t is the amount of time in secounds since he started his jump
use a graph to help you find the maximum height
Use the quadratic formula to determine how long he was in the air
Click here to see answer by Alan3354(31518)

Question 172502: you have a 1200 foot roll of fencing and a large field. You want to make 2 paddlocks by splitting a rectangle enclosure in half. What are the dimensions of the largest such enclosure
Click here to see answer by josmiceli(9817)

Question 172620: F(X) = 3X^2 - 4X -1
Find the zeros of the function?
Click here to see answer by stanbon(57962)

Question 172648: how do you solve the equation X^2 +2x-3
Click here to see answer by jim_thompson5910(28708)

Question 172648: how do you solve the equation X^2 +2x-3
Click here to see answer by Alan3354(31518)

Question 172668: write the quadratic function in vertex form. Then, identify the vertex.
x²-16x+56=0
Click here to see answer by stanbon(57962)

Question 172693: use the given values to find an equation of the form f(x)=ax^2 + bx + c
3. f(0)= 6, f(2)= 18, f(4)= 34
Please explain step by step!
I would really appreciate any help!
Thank you very much!
Click here to see answer by checkley77(12569)

Question 172691: use the given values to find an equation of the form f(x)= ax^2 + bx + c
1. f(0)= 5, f(1)=10, f(2)= 19
Please explain step by step so I understand!
I would really appreciate any help!
Thank you very much
Click here to see answer by checkley77(12569)

Question 172698: could you please explain this problem step by step.
Determine whether x-1 or x+1 is a factor of
x^100 - 4x^99 + 3

I would really appreciate your help!
Click here to see answer by Alan3354(31518)

Question 172689: I really dont understand this problem can some pleas help me thank you
A business invests $10,000 in a savings account for two years. At the beginning of the second year, an additional $3500 is invested. At the end of the second year, the account balance is $15,569.75. What was the annual interest rate?

Click here to see answer by Mathtut(3670)

Question 172677: Solve x.
x^2+2^x = 100
Click here to see answer by Mathtut(3670)

Question 172677: Solve x.
x^2+2^x = 100
Click here to see answer by Alan3354(31518)

Question 172630: help!
Find zeros for the function:
g(x) = 6 - x^2 -5x
h(x) = x^2 + 6x + 12
Click here to see answer by KnightOwlTutor(293)

Question 172759: If an object is propelled upward from a 288 foot high tower at an initial velocity of 48 feet per second, then its height h(in feet) after t seconds is given by the equation h=-16t^2+48t+288. What is the maximum height reached by the object?
Click here to see answer by solver91311(17077)

Question 172694: A manufacturer charges $24 for stereo headphones and has been selling about 1000 a week. He estimates that for every $1 price reduction, 100 more headphones can be sold per week. (For example, he could sell 1100 headphones at $23 each and 1200 headphones at $22 each.)
a. Let 24-x be the reduced price per set of headphones. write a quadratic function that gives the total revenue recieved by the manufacturer in a week.
My work- would it be 24-1 I really don't understand a & b
b. What price will maxamize the total revenue?
Please explain
I would really appreciate any help
Thank you
Click here to see answer by ankor@dixie-net.com(15746)

Question 172747: 25x2+30x+9=-30x please help thankyou
Click here to see answer by checkley77(12569)

Question 172827: (3i)-(7i)-(-1-i) My teacher gave me the answer which is 1-(3i) I can not figure out how she did and need to know for a test tomorrow Thank you
Click here to see answer by checkley77(12569)

Question 172846: If you are looking at a graph of a quadratic equation, how do you determine where the solutions are?
Click here to see answer by solver91311(17077)

Question 172864: f(x)=x^2+2x-3
Click here to see answer by Mathtut(3670)

Question 172888: Is this trinomial a perfect square?
x² - 6x - 9
Please show work as to how it is or isn't.
Click here to see answer by Alan3354(31518)

Question 172883: Solve by completing the square.
x² = 5x + 2
Click here to see answer by jim_thompson5910(28708)

Question 172883: Solve by completing the square.
x² = 5x + 2
Click here to see answer by solver91311(17077)

Question 172910: f(x)=x^3-4x
(Hint: x=1 is a triple root)
please explain step by step
I would really really appreciate any help
Click here to see answer by jim_thompson5910(28708)

Question 172897: Find the vertex, axis, and the x & y intercepts of
y= (2x-7) (2x-1)
please explain step by step
I would really appreciate any help!
Click here to see answer by jojo14344(1512)

Question 172908: 3x^4 -2x^3 + 5x^2 + x + 1; x^2+2x
Please explain step by step
I would really appreciate any help
Click here to see answer by jim_thompson5910(28708)

Question 172940: The so-called golden rectangle is said to be extremely pleasing visually and was used often by ancient Greek and Roman architects. The length of a golden rectangle is approximately 1.6 times the width. Find the dimensions of a golden rectangle if its area is 9000 m^2.
Click here to see answer by jojo14344(1512)

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