Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 170862: For each quadratic function, first a, b and c. then, write whether the graph of the function opens upward or downward and whether the function has a minimum or a maximum y=2xsquared-3x+1
Click here to see answer by jim_thompson5910(35256)

Question 170861: I need to make this number a positive exponent and then simplify if possible. This is an algebra questions for college Math 100.
Click here to see answer by jim_thompson5910(35256)

Question 170864: xsquared+x-5
Click here to see answer by KnightOwlTutor(293)

Question 170864: xsquared+x-5
Click here to see answer by jim_thompson5910(35256)

Question 170865: I need to find a,b,and c. If the function opens upward or downward and if the function has a minimum or a max. y=xsquared+x-5
Click here to see answer by jim_thompson5910(35256)

Question 170727: Steve traveled 600 miles at a certain speed. Had he gone 20mph faster, the trip would have taken 1 hour less. Find the speed of his vehicle.
Not sure how to do these word problems and will appreciate any help, so far I have a B in class :)
Click here to see answer by Mathtut(3670)

Question 170892: Can you please help show me how to solve this quadratic equation by completing the square.
x^2 + 4x - 12 = 0
Click here to see answer by stanbon(75887)

Question 170893: Can you please help show me how to solve this quadratic equation by completing the square.
a^2 - 4a + 5 = 0
Click here to see answer by stanbon(75887)

Question 170897: Can you please show me how to solve this equation using the quadratic formula
4m^2 - 8m + 1 = 0
Click here to see answer by KnightOwlTutor(293)

Question 170896: solve this equation using the square root property
please help me by showing how to work this out.
3x^2 = 8
Click here to see answer by KnightOwlTutor(293)

Question 170895: Can you please show me how to solve this equation using the square root property
x^2 + 5 = 13
Click here to see answer by scott8148(6628)

Question 170894: Please help show me how to solve this quadratic equation by completing the square.
m^2 = 8m + 3
Click here to see answer by scott8148(6628)

Question 170953: please help me answer this question. What three techniques can be used to solve a quadratic equation? I also need to demonstrate these techniques on the equation "12x^2 - 10x - 42 = 0".

Click here to see answer by Alan3354(69443)

Question 170891: Can you please help show me how to solve this quadratic equation by completing the square.
w^2 - 5w = 14
Thank you so much
Click here to see answer by jojo14344(1513)

Question 171112: 2x^2-2x+7=0
I have to solve this by completing the square. I solved it but I'm unsure of my answer, I got x= 1/2 + or - i times radical 13 over 2.
Click here to see answer by jim_thompson5910(35256)

Question 171147: I need to solve and graph these equations. I have not done this since high school and cannot remember how to solve these.
(x+2)^2 + (y-4)^2 = 36
y=3x^2
y=x^2+x
(x-1)^2 + (y-8)^2 = 16
Click here to see answer by KnightOwlTutor(293)

Question 171188: If x = 1 and x = -8, then form a quadratic equation. Again, I have to work this problem backwards in order to figure it out, can someone help me with this one also? I am lost!
Click here to see answer by scott8148(6628)

Question 171197: solve each equation by factoring..
1. 4x2 – 17x – 15 = 0
2. 10x2 + 19x + 6 = 0
3. Solve 3x2 = 4,800 by using square roots.
Click here to see answer by scott8148(6628)

Question 171203: Factor each quadratic expression.

1. –8x2 + 32
2. 3x2 + 13x – 10
3. 5x2 – 19x – 4

Click here to see answer by scott8148(6628)

Question 171187: Create a real-life situation that fits into the equation (x + 4)(x - 7) = 0 and express the situation as the same equation. I don't know how to work this problem backwards, help me please.
Click here to see answer by Mathtut(3670)

Question 171190: Quadratic equations are one of my weakest links in math which is my worst subject. Can someone assist me with these problems, I definately appreciate it!
1. Determine whether the following equations have a solution or not? Justify your answer.
s2 - 4s + 4 = 0
5/6x2 - 7x - 6/5 = 0
7a2 + 8a + 2 = 0

Click here to see answer by oscargut(2103)

Question 171185: 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. I am confused I always thought it was Ax^2 +Bx +C=0, am I missing something in this question? Please help

Click here to see answer by Mathtut(3670)

Question 171202: Graph each number on the complex plane and find its absolute value..
8. 3 - 4i
9. 8 + 10i
10. 9 + 3i

Click here to see answer by stanbon(75887)

Question 171245: Please HELP! I am stuck on these 4 problems!!!
I need to find the factors of the following:
4b^2 - 16
m^2 - 14m + 48
q^3 - q^2 + 2q - 2
t^4 - 81
!!!THANK YOU SO MUCH!!!
Click here to see answer by scott8148(6628)

Question 171221: Solve
4 – 5x > 11

Thanks for any help
Click here to see answer by scott8148(6628)

Question 171247: the question is to state the domain 1 over x+3
Click here to see answer by Mathtut(3670)

Question 171249: Please help me with this problem. x+a=yb The question says to solve for y and to isolate the variable using- the distributive property? I'm so confused.
Click here to see answer by Mathtut(3670)

Question 171209: Can you PLEASE show me how to graph a quadratic function using its properties?
p(x)=-x^2+2x-5 Thank You!
Click here to see answer by KnightOwlTutor(293)

Question 171365: A rectangular garden has a perimeter of 140m and an area of 1200m^2. Set up a quadratic equation and solve it algebraically to find the dimensions of the garden.
Click here to see answer by stanbon(75887)

Question 171379: The height of a golf ball after being hit is approximated by the equation h=18t-4t^2, where h is the height above the ground in meters t seconds after the ball is hit. Algebraically determine the approximate instantaneous rate of change of height of the golf ball when the time is 3.0 seconds, and describe what is happening to the ball at that instant.
Click here to see answer by stanbon(75887)

Question 171381: Algebraically determine the EXACT roots in simplest form for:
a) (5/x-3)=(x/x+1)
b) 3x-2=(-13/x+4)
Click here to see answer by stanbon(75887)

Question 171377: The power P, in watts, supplied to a circuit by a battery is given by the formula P=6I-0.5I^2, where I is the current in amperes. What is the approximate instantaneous rate of change of power when the current is 4 amperes?
Click here to see answer by Alan3354(69443)

Question 171389: A rectangular swimming pool has length 30 m by 20 m. There is a deck of uniform width surrounding the pool. The area of the pool is the same as the area of the deck. Write a quadratic equation to model this situation and use it to determine the width of the deck.
Click here to see answer by midwood_trail(310)

Question 171444: y + 6(square root of y) = 16
Click here to see answer by ptaylor(2198)

Question 171384: A rectangular pool measures 10m by 5m. A deck, of uniform width, is to be built all the way around the pool such that the total area of the pool and deck will be 126m^2. Set up and solve a quadratic equation to determine the width of the deck.
Click here to see answer by ptaylor(2198)

Question 171452: Please solve it
x^ +7x+12=0
Click here to see answer by nerdybill(7384)

Question 171453: Please solve it
x^2 +7x+12=0
Click here to see answer by nerdybill(7384)

Question 171206: Can you PLEASE show me how to graph a quadratic function using its properties?
f(x)=x^2-4x-5
Click here to see answer by jojo14344(1513)

Question 171383: A paper airplane follows a parabolic path with h=-1/4t^2+t+3, where h is height in meters, and t is time in seconds. Algebraically determine how long it takes for the paper airplane to hit the ground.
Click here to see answer by nerdybill(7384)

Question 171525:
Complete the square.
1. x2 + 60x +
2. x2 � 7x +

Solve each equation by completing the square.
3. x2 � 6x � 16 =

4. x2 � 14x + 74 = 0

5. 3x2 + 5x � 28 = 0

6. 4x2 � 6x + 3 = 0

Click here to see answer by solver91311(24713)

Question 171528: / means square root.
[] means absoulte value..
1.. simpliy -/-169
2..find [-1+i]

Click here to see answer by stanbon(75887)

Question 171582: Can you please show me how to solve this equation using the quadratic formula
(x-5)(x+1) = 4
Click here to see answer by Alan3354(69443)

Question 171583: I need help solving this quadratic equation by factoring:
t(3t+1)=2
Click here to see answer by Alan3354(69443)

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