Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 601955: b^2-4b+4=0
Click here to see answer by scott8148(6628)

Question 602028: Hi! My Algebra teacher has not been here the past two weeks so I have been teaching myself everything. I can't seen to figure out how to solve equations by completing the square. For example: f^2+3f=88 Thank you!
Click here to see answer by scott8148(6628)

Question 602060: The area of a triangle is 35 square inches. The height of the triangle is 2 inches less than the base. What are the base and height of the triangle? Please help. I am so stuck!
Click here to see answer by josmiceli(9817)

Question 602170: What is the solution of x^2=-6x
Click here to see answer by Alan3354(31503)

Question 602215: Find the side of a square with an area of 90 ft^2
Click here to see answer by jim_thompson5910(28699)

Question 602215: Find the side of a square with an area of 90 ft^2
Click here to see answer by mananth(12270)

Question 602255: I am having trouble solving this equation by either using the quadratic formula, by factoring or by completing the square..
3x^2=15x+10
i have come up with the answer of x=15+- square root of 105/6 is this correct?
email is stonewoodfarms87@aol.com
Click here to see answer by ankor@dixie-net.com(15746)

Question 602468: Two consecutive positive integers such that the square of the second integer added to 4 times the first is equal to 28
Click here to see answer by stanbon(57949)

Question 602468: Two consecutive positive integers such that the square of the second integer added to 4 times the first is equal to 28
Click here to see answer by ewatrrr(10682)

Question 602579: 4x^3+3x^2=64x+48
I tried and ended up with x=16,-16, and -3/4. Is that correct?
Click here to see answer by Alan3354(31503)

Question 602582: Write a quadratic equation having the given numbers as solutions. -4 and -2
Type in standard form.
Click here to see answer by Alan3354(31503)

Question 602582: Write a quadratic equation having the given numbers as solutions. -4 and -2
Type in standard form.
Click here to see answer by jim_thompson5910(28699)

Question 602626: What is the answer to: n2 (n squared) - (minus) n=182 And how do i do it please?
Click here to see answer by scott8148(6628)

Question 602892: the length of a rectangle is 4 centimeters less than triple the width and the area is 32 find the dimensions.
Click here to see answer by flame8855(424)

Question 602965: Use the quadratic formula or completing the square to solve:
3m^2+9m=-2
Click here to see answer by ewatrrr(10682)

Question 603088: Find the vertex of the following quadratic function, and find any intercepts. Also determine the graph of the function.
f(x)= x^2-6x+10
Click here to see answer by lwsshak3(6748)

Question 603181: Determine the coordinates of the x-intercepts for the quadratic equation 6x2 - 7x + 2 = 0.
Click here to see answer by mananth(12270)

Question 603297: If I add the square of a number to the number itself, I get 30. What could the number be? I need the equation!
Click here to see answer by Alan3354(31503)

Question 603440: I don't understand why 2x^2=15-7x has the answer x=-5, 1.5
Click here to see answer by ewatrrr(10682)

Question 603439: I don't understand why 2x^2=15-7x has the answer x=-5, 1.5
Click here to see answer by ewatrrr(10682)

Question 603438: Hello,
I need help please.....
Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form -√ ̅7, 3 √ ̅7
Thanks so much
Click here to see answer by ankor@dixie-net.com(15746)

Question 603423: Hi,
I am completely lost. I need help with these please.
1) During the first part of a trip, a canoeist travels 63 miles at a certain speed. The canoeist travels 7 miles on the second part of the trip at a speed of 5 mph slower. The total time of the trip is 5 hours. What was the speed on each part of the trip?
2) Write a quadratic equation having the given numbers as solutions -3, -1
Thanks so much
Click here to see answer by ewatrrr(10682)

Question 603470: Hi,
Can someone help me please?
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.
-√̅10, 6√̅10
Thanks,
Click here to see answer by solver91311(17070)

Question 603515: Can someone give me an example of a problem that a graph would work well on?

Click here to see answer by richwmiller(9144)

Question 603572: what are the cordinates of this equation x^2-x-12=0
Click here to see answer by jim_thompson5910(28699)

Question 603689: Find all real solutions: x-5x^1/2+4=0
How would you solve this question?
Click here to see answer by mananth(12270)

Question 603872: If I am only given the solution how do I find the quadratic equation? I know that I have to work in reverse but I am not sure how to begin. could you help with an example?
Click here to see answer by ewatrrr(10682)

Question 604012: Hi,
Can someone help me please?
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.
-√̅7, 7√̅7
Thanks,
Click here to see answer by josmiceli(9817)

Question 604048: What is 3tsuared-7t-20
Click here to see answer by solver91311(17070)

Question 604227: please help solve this equation 7x^2-19x-6

Click here to see answer by flame8855(424)

Question 604246: solve z^2 = -z+1 by using the quadratic formula
Click here to see answer by flame8855(424)

Question 604247: Use the discriminant to determine the number of real solutions for the equation 8z^2-2z+6=0

a. 0
b. 1
c. 2

Click here to see answer by bucky(2189)

Question 604356: Can 5x^2 + 2x - 13 = 0 be factored?
Click here to see answer by jim_thompson5910(28699)

Question 604455: Beginning with the quadratic equation y = ax2 + bx + c, David plugged in 0 for x to get y = a(0) + b(0) + c, or y = c. What is ONE reason he might have done that?
Click here to see answer by solver91311(17070)

Question 604688: Rewrite the quadratic equation in standard form by completing the square.
f(x)=x^2+8x+14
Answer (f(x)= (x, plus or minus ___)^2 plus or minus ____
I have worked this to x, 4 as well as x, -4. I have also come up with x, +8.
Also for the second answer I have some up with +14 or sqrt 2.
Click here to see answer by nerdybill(7003)

Question 604791: hence, solve 15P^2-2P=0
Click here to see answer by alicealc(281)

Question 604841: Can you please help my in How to solve quadratic function word problems
my question is
A ball is released 6 feet above the ground and thrown vertically into the air. The equation h=-16t^+112t+6 gives the height of the ball if the initial is 112 feet per second.
1. Write the equation of the axis of symmetry and find the coordinates of the vertex of the graph of the equation.
2. What is the maximum height above the ground that the ball reaches?
3. How many seconds is the ball in the air?
Click here to see answer by nerdybill(7003)

Question 605101: What are the coordinates of the vertex of the graph of the given function?
y=-4x^2+3
a. (0,-4)
b. (0,0)
c. (0,3)
d. (0,-4/3)
Click here to see answer by stanbon(57949)

Question 605216: write an quadratic function that has a vertex(-2,-4) and passes through the points (0,0).
Click here to see answer by josmiceli(9817)

Question 605647: Please help me with my second to last problem of my homework! I really need help...
To go over a tree, a golfer uses a 7-iron to hit the ball with an initial upward velocity of 80 feet per second.
a. Write a quadratic function that gives the height of the ball t seconds after it is hit.
I think that a. is h(t)= 80t-16t^2 but I'm not sure...
b. Graph the function you found in part (a). (you can only give me the T chart.)
c. After how many seconds will the ball be at its maximum height?
d. What is the approximate maximum height the ball will reach?
Click here to see answer by nerdybill(7003)

Question 605744: Please help me solve this quadratic equation:
Click here to see answer by mathie123(224)

Question 605863: A ball is thrown upward with a velociity of 80ft/s from a height of 576ft. H= -16t^2+80t=576 gives the height,h, after t sec. Find the time when the ball is 300ft above the ground. H value is 300

OK--I know how that I have to set it to zero by subtracting 300 from 576. It will not factor out evenly. After setting it up with the quadratic formula, I am still getting it wrong. Please help me. I am on my 5th problem like this and am severly struggleing.
Click here to see answer by jim_thompson5910(28699)

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