Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 151761: Hank has three square fields. One field is 1 kilometer longer than the side of the smallest field. The side of the largest field is 3 kilometers longer than the smallest field. The total area of the fields is 38 square kilometers . What is the area of each field? This doesn't sound like it should be difficult but I can't figure it out. A=S^2 ???? 38= S^2 + S^2+1^2 + S^2 +3^2 ???
Click here to see answer by Fombitz(32388)

Question 152692: By adding the same amount to its length and its width, a developer increased the area of a rectangular lot by 3000 m^2 to make it 80 m by 100 m. What were the original dimensions of the lot?
Click here to see answer by checkley77(12844)

Question 152820: solve:
18a^3-54a^2+36a

Click here to see answer by jojo14344(1513)

Question 152823: solve for x:
50 - 5x + x^2
Click here to see answer by Fombitz(32388)

Question 152822: solve for a:
16a^4 - 9a^2 = 0
Click here to see answer by Fombitz(32388)

Question 152851: I have a problem solving this problem Can someone help me?
The problem is solve using the sqrt property:
2x^2-35=15
Click here to see answer by jim_thompson5910(35256)

Question 152851: I have a problem solving this problem Can someone help me?
The problem is solve using the sqrt property:
2x^2-35=15
Click here to see answer by Earlsdon(6294)

Question 152916: I was wondering if someone could help me with this problem. Somehow I can't get it started.
Problem is solve using the quadratic formula:
x^2-3x=7x-2
Click here to see answer by jim_thompson5910(35256)

Question 152941: How do you solve by completing the square?
The problem is x^2+6x+1=0
Thank you
Click here to see answer by Earlsdon(6294)

Question 152982: I need help! I am trying to figure this problem out. The problem is to solve by factoring: x^2-13x=-12
If someone can help, I need it!
Click here to see answer by orca(409)

Question 153016: a triangular sail has an area of x squared +5x+6 squared meters and a height of x+3 meters. find the length of the sail's base.
Click here to see answer by nerdybill(7384)

Question 153004: Show that the equation (x-a)(x-b)+(x-b)(x-c)+(x-a)(x-c)=0 has equal roots when a=b=c
Click here to see answer by jim_thompson5910(35256)

Question 153052: If a bike shop determines that when x hundred bikes are built, the average cost per bike is given by c(x)=0.6^2-0.8x+5.854 where c(x) is in hundreds dollars. How many bikes should be built to mininize the average cost per bike.
c(x)=0.6x^2-0.8x+5.854
c(x)=0.6(x^2- ?)+5.854
Thank you!
Click here to see answer by stanbon(75887)

Question 153064: If someone opens a book to two facing pages, the product of the page number is 2352. What is the first and second page?
Click here to see answer by Earlsdon(6294)

Question 153069: The length of a retangle is twice the width. The area is 392 yards^2. Find the length and width.
I tried to solve this problem, but I am not sure if I did it correctly.
A=196(95)-(95)
=18620 - 9025
=9595
w=95
l=95

Click here to see answer by checkley77(12844)

Question 152686: The bending moment m of a simply supported beam of length L with a uniform load of w kg/m at a distance X from one end is M = 0.5wLx - 0.5wx^2. For what values of x is M = 0?
Click here to see answer by orca(409)

Question 153083: Find the quotient and remainder of .
Click here to see answer by vleith(2983)

Question 153082: Find all the solutions of given that -2 is a root
Click here to see answer by vleith(2983)

Question 153087: How do you compute the intercepts of a quadratic function?
Click here to see answer by jim_thompson5910(35256)

Question 153089: Solve for x
x^2+72=12x
Click here to see answer by Earlsdon(6294)

Question 153093: FOR give zero(s), horizontal asymtote(s), verticle asymtope(s), y-intersept and interval(s), where graph is positive and negative
Click here to see answer by oscargut(2103)

Question 152961: I need help with solving the equation 12= (x+3)^2-2 using the graphing method but i'm not sure what the graphing method is?
Click here to see answer by checkley77(12844)

Question 153097: The Equation y=-4.9x^2+9x+15 describes the height of a diver,y, in metres at x seconds
a)Use the partial factored form to make a sketch of the parabola.
Answer)
y=-4.9x^2+9x+15
y=-4.9(0)^2+9(0)+15
y=15
Find the second point where y=15
y=-4.9x^2+9x+15
15=-4.9^2+9x+15
15-15=-4.9^2+9x+15-15
0=-4.9^2+9x
0=1(-4.9x^2+9x)
Here I have a problem as I dont know how to factor -4.9 and 9

Click here to see answer by stanbon(75887)

Question 153133: FOR give zero(s), horizontal asymtote(s), verticle asymtope(s), y-intersept and interval(s), where graph is positive and negative
Click here to see answer by stanbon(75887)

Question 153155: Find two real numbers that have a sum of 8 and a product of 2.
Click here to see answer by nerdybill(7384)

Question 153169: 2x^2 = 4, this is incomplete quadratic equation, how can i solve it?
Click here to see answer by oscargut(2103)

Question 153237: The members of a flying club plan to share equally the cost of $200,000 airplane. The members want to find five more people to join the club so that the cost per person will decrease by $2,000. How many members are currently in the club?
Click here to see answer by checkley77(12844)

Question 153236: The manager at Cream of the Crop bought a load of watermelons for $200. She priced the melons so that she would make $1.50 profit for each melon. When all but 30 had been sold, the manager had recovered her initial investment. How many did she buy originally?
Click here to see answer by checkley77(12844)

Question 153339: Please help with this equation.
Solve using the quadratic formula:
x^2-7x-1=-7
Thank you!
Click here to see answer by mangopeeler07(462)

Question 153351: Hello, I am in deep need of help. I am suppose to use the sqrt property to solve equation.
(a-2)^2=8
Thanks for anyone that can help.
Click here to see answer by Earlsdon(6294)

Question 153357: Help!!!!
Write the equation 4x(x-13)=-168 in quadratic form and then solve it by factoring.
Thanks
Click here to see answer by ankor@dixie-net.com(22740)

Question 153356: Reading problem
The height h(in feet) of an object that is dropped from the height of s feet is given by the formula h=s-16t^2, where t is the time the object has been falling. A 6 foot tall woman on a sidewalk looks directly overhead and sees a window washer drop a bottle from the 2 story. How long does she have to get out of the way? Round to the nearest tenth (A story is 12 feet).
I appreciate anyone who can help solve this problem. Thank you.
Click here to see answer by ankor@dixie-net.com(22740)

Question 153479: On planet X, an object falls 18 feet in 3 seconds. Knowing the distance it falls varies directly with the square of the time of fall, how long does it take an object to fall 100 feet? Round your answer to three decimal places
Click here to see answer by stanbon(75887)

Question 153478: Given the function f(x) = - 4x find the AVERAGE RATE of CHANGE of f from -4 to 1
Click here to see answer by stanbon(75887)

Question 153477: Is the function y = x / (x 2 - 3) EVEN, ODD or neither
Click here to see answer by stanbon(75887)

Question 153520: I tried to use the sqrt property to solve the equation. The problem is x^2=9
Will you tell me if I did this correctly?
x^2=9
x=+/-9
x=+/-3
x=3, x=3
Thanks for anyones help.
Click here to see answer by Earlsdon(6294)

Question 153519: I need help with this equation. The problem is use factoring to solve the equation. x^2-19x+88=0
Thank you for your help.
Click here to see answer by Earlsdon(6294)

Question 153526: I can't seem to get the formula right to solve problem. Can someone help?
The problem is to use the quadratic formula to solve the equation:
x^2-11x+30=0
Thanks for your help!
Click here to see answer by Fombitz(32388)

Question 153540: I have a word problem that I can't figure out. The problem reads a rectangle is 4 feet longer than it is wide, and its area is 77 square feet. Find its dimensions.
Thanks if you can help!
Click here to see answer by Fombitz(32388)

Question 153542: I am stuck on this problem. I did the equation and my answer was y=0,y=9. The problem is to use factoring to solve the equation. 2y^2-162=0
If I'm correct, yea for me!
Click here to see answer by Fombitz(32388)

Question 153541: x^2+ 4x + 8= 8x = 29
This is my problem I am having teouble figuring this out! I dont have a clue on how to do it!! if someone can tell me how to do it not just the answer!! THANX A BUNCH!!
Signed,
dnt know how to do this problem girl!
Click here to see answer by sbarbagallo(4)

Question 153699: hw do you seperate the a and x??

2-----------------2
A x +3 = 2 A
Click here to see answer by Earlsdon(6294)

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