Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 139166: Apply using quadratic formula to find the roots and graph.
g(x)= x^2 - x - 12
Click here to see answer by checkley77(12844)

Question 139165: Apply using the quadratic formula to find the roots of the given function, graph the function.
f(x) = x^2 - 4
Click here to see answer by checkley77(12844)

Question 139225: I cannot understand how to solve the quadratic equation: -1+3x^2=2x
I need to use the quadratic formula. My teacher wants us to leave it under the radical symbol if it is not a perfect square.
Click here to see answer by checkley77(12844)

Question 139112: Loren drove 200 miles at a certain rate and his wife Lois drove 100 miles at a rate 10 mph slower. If loren had driven the entire trip they would have arrived 30 minutes sooner What was Loren's rate.
Click here to see answer by ankor@dixie-net.com(22740)

Question 139266: Graph the inequality and then graph on a plane.
5y - 6x > 30
Helpp me with this please.
Click here to see answer by solver91311(24713)

Question 139270: Solve by the elimination method.
3x+4y=3
6x+8y=6
What is the solution of the system. Help me please.
Click here to see answer by solver91311(24713)

Question 139175: Please help me translate this into a quadratic equation and solve.
The Hudson River flows at a rate of 3 miles per hour. A patrol boat travels 60 miles upriver, and returns in a total time of 9 hours. What is the speed of the boat in still water?
Click here to see answer by ankor@dixie-net.com(22740)

Question 139269: Solve.
6(r-7)+1 > 7(r+3)-22
The solution set is {rlr ? ?}
Will some one help me please...
Click here to see answer by stanbon(75887)

Question 139267: Determine if the given numbers are solutions of the inequality.
7, -12, -14, -2
y-8>2y-2
Help me i do not no how to do these correctly
Click here to see answer by stanbon(75887)

Question 139356: if i have a parabola with a vertex of (4,10) and x-intercepts of 0 and 8, how do i establish the quadratic equation. i came up with y=(x-4)squared + 10.
Ho do you establish the "a" of ax squared + bx + c
Click here to see answer by stanbon(75887)

Question 139338: Help with translating this into a quadratic equation to solve. Thanks!
A photo is 3 inches longer that it is wide. A 2 inch border is placed around the photo making the total area of the photo and border 108in^2. What are the dimensions of the photo?
Click here to see answer by ankor@dixie-net.com(22740)

Question 139337: Help me translate this into a quadratic equation and solve. Thanks!
Three consecutive even integers are such that the square of the third is 76 more than the square of the second. Find the three integers.
Click here to see answer by checkley77(12844)

Question 139321: 4x-3x-1/2=3x+1/2-22x-1
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Question 139268: y=5xsquared
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Question 139265: The perimeter of a rectangle is 74m. The length is 1 m more than twice the width. Find the demensions.
What is the length?
What is the width?
Can someone help?
I would also like to thank EVERYONE who has helped me since I started having to come here for your help you have been Great and I really apprciate learning from you all.
Click here to see answer by checkley77(12844)

Question 139336: Help me translate this into a quadratic equation and solve. Thanks!
A rectangle parking lot is 50 ft longer than its width. Determine the dimensions of the parking lot if it is measures 250 ft. diagonally.
Click here to see answer by scott8148(6628)

Question 139448: use the quadratic formula to solve the equation
-2X^2+6X+8=0
Click here to see answer by checkley77(12844)

Question 139465: The base of a triangle is 2 m less than the height. The area of the triangle is 36m^2 . Determine the height of the triangle.

h=____

Please help I have no clue how to do this ,
Click here to see answer by scott8148(6628)

Question 139466: Find the value of b for which the equation has exactly one real root. (Hint- think discriminate0

x^2+bx+36=0
Click here to see answer by scott8148(6628)

Question 139443: Solve then graph.
x + 8 > 2
The solution set is ?
Help me figure this one out please.
I would like to thank everyone who has helped me. I still have a couple weeks of needing your help. I must say I have learned a lot, but am still confused of a lot also...Thanks again everyone.
Click here to see answer by jim_thompson5910(35256)

Question 139497: Complete the square and find the roots of the quadratic equation
how do i solve this ????
x^2 + 16x = 0
Click here to see answer by MathTutorer(13)

Question 139496: complete the square, and find the roots of the quadratic equation
Tutor plz help ?

x2 + 16x = 0

Click here to see answer by stanbon(75887)

Question 139454: I'm not sure if this is in the right section, but anyway, here is the question: Alexandra constructed a rectangular pen for her dog using a side of the barn for one side and 26 meters of fencing for the remaining three sides. If the area enclosed was 72 square meters, find the dimensions of the pen. Please, help, and many, many thanks in advance.
Click here to see answer by ankor@dixie-net.com(22740)

Question 139518: hello....I am stumped...hope you can help...Question: Assume Joe Ball hits a major league pop-up (straight upward) on a Johnny Bench 90mph pitch. The function that describes the ball's height (in feet/second) is: h(t) = -16t^2+132t h(t) is height, t = is seconds...How many seconds for the ball to go up and back down? How high does the ball go? I came up with answers 4.125 for ball to go up and down and 272.25 feet for how high ball goes up (correct??)...but here's the stumper: it's now asking to repeat problem using planet Mercury. How do I complete this? (FYI, Mercury is 38% of Earth)....Hope you can help and show me the correct formula and answers..Thank you
Click here to see answer by scott8148(6628)

Question 139522: How would I solve this using quadratic formula?
g(x) = x^2 + x + 12

Click here to see answer by solver91311(24713)

Question 139521: How would I solve this using quadratic formula?
f(x) = x^2 + 4

Click here to see answer by jim_thompson5910(35256)

Question 139520: What do I solve this by factoring?
49x^2 - 14x - 3
Thanks!
Click here to see answer by jim_thompson5910(35256)

Question 139519: What do I solve this by factoring?
20x^2 + 13x + 2
Thanks!
Click here to see answer by jim_thompson5910(35256)

Question 139545: x squared - 6= 0
Click here to see answer by solver91311(24713)

Question 139544: t to the 4th power - 6t squared - 4= 0
Click here to see answer by solver91311(24713)

Question 139551: x squared - 6= 0

Click here to see answer by checkley75(3666)

Question 139462: What are the dimensions of a rectangle that has a perimeteer of 42 meters and an area of 90 square meters.

HELP!
Click here to see answer by checkley75(3666)

Question 139568: Why is it called algebra?
Why is algebra useful?
What does an algebra problem look like?
How are algebra problems different?
Click here to see answer by solver91311(24713)

Question 139569: What type of solution do you get for quadratic equations where D < 0? Give reasons for your answer.
Very confused.
Click here to see answer by Edwin McCravy(20054)

Question 139569: What type of solution do you get for quadratic equations where D < 0? Give reasons for your answer.
Very confused.
Click here to see answer by solver91311(24713)

Question 139592: Factor each expression.
x2-3x-40
Click here to see answer by jim_thompson5910(35256)

Question 139615: If the equation of a circle is x^2+y^2+3x-my+10=0 and the point (2,-5) lies on the circle, what is the value of m? I think it is -6???
Click here to see answer by stanbon(75887)

Question 139645: Find the side of a square with an area of 625 ft.^2 by using a quadratic equation. I know that to find the area of a square you do length times width and all sides of a square are equal so I found the square root of 625, which was 25. But I am not sure on how to solve this problem using a quadratic equation. Thanks!!
Click here to see answer by stanbon(75887)

Question 139635: HELP NO clue how to do this!
An eagle is circling a field at a height of 250 feet sees a snake below. The eagle dives at an initial speed of 110 feet per second. Determine the time the snake has to escape.
Click here to see answer by stanbon(75887)

Question 139613: Write in general form the equation of the circle given center (4,-1) and radius 10. Please help:)
Click here to see answer by scott8148(6628)

Question 139614: What is the equation of the circle having a diameter with endpoints (-4,4) and (2,8)? Please help:)
Click here to see answer by scott8148(6628)

Question 139714: 49m2-9=0
Click here to see answer by checkley75(3666)

Question 139753: What is the vertex? How do you find the vertex? y=x^2+x-12

Click here to see answer by solver91311(24713)

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