Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 82107: solve the system by graphing
x-y=5
x+y=3
Click here to see answer by stanbon(75887)

Question 82106: given f(x)=5x squared-3x+1 find f (-2)
A)-13
B)15
C)25
D)27
Click here to see answer by stanbon(75887)

Question 82112: Hi how do i graph y=1 i cant figure this out
Click here to see answer by checkley75(3666)

Question 82105: rewrite the equation
2x-3y=-6 as a function of x
Click here to see answer by checkley75(3666)

Question 82128: Please assist me to solving the equation using Quadratic formula
x�+8x+7=0
Click here to see answer by Edwin McCravy(20054)

Question 82127: please assist me in:
1. solve by completeing the square. p² - 8p = 0.
2. solve by graphing x² + 6x - 2 = 0

Click here to see answer by Edwin McCravy(20054)

Question 82127: please assist me in:
1. solve by completeing the square. p² - 8p = 0.
2. solve by graphing x² + 6x - 2 = 0

Click here to see answer by Earlsdon(6294)

Question 82124: determine which two equations represent parallel lines
y=5/8x+3
y=-8/5x-8
y=3x+11
y=3x-3
Click here to see answer by Edwin McCravy(20054)

Question 82103: determine which two equations represent parallel lines
y=5/8x+3
y=-8/5x-8
y=3x+11
y=3x-3
Click here to see answer by Edwin McCravy(20054)

Question 81811: i do not understand how to graph this and i have asked and gotten no response can someone please help me with this? its due tomm on mothers day
Graph the inequality.
y>/1

Click here to see answer by tutorcecilia(2152)

Question 82146: please assist me in solving this problem by using the quadratic formula
x2-x+1=0
Click here to see answer by Edwin McCravy(20054)

Question 82125: rewrite the equation 2x-3y=-6 as a function of x
Click here to see answer by tutorcecilia(2152)

Question 82101: fni (looks like a big E)x for the following group of terms
-2,3,-3,6,-5,8,-4
A)6
B)2
C)3
D)-1
Click here to see answer by Edwin McCravy(20054)

Question 82156: the length of a rectangle is 8 in more than twice its width. if the perimeter of the rectangle is 58 in, find the width of the rectangle
a)6 in
b)7 in
c)8 in
d)9 in
Click here to see answer by checkley75(3666)

Question 82110: the length of a rectangle is 8 in more than twice its width. if the perimeter of the rectangle is 58 in, find the width of the rectangle.
Click here to see answer by weepingwillowcats(10)

Question 82154: graph x=3
Click here to see answer by checkley75(3666)

Question 82153: determine whether the following is an expression
b+c
Click here to see answer by lovebug93(2)

Question 82167:
3x^2-11x-2=0
Click here to see answer by jim_thompson5910(35256)

Question 82198: 1) 2x^2-6x+1=0

2) 4x^2-6x-1=0
Click here to see answer by jim_thompson5910(35256)

Question 82198: 1) 2x^2-6x+1=0

2) 4x^2-6x-1=0
Click here to see answer by checkley75(3666)

Question 82180: A rocket is launched from atop a 104-foot cliff with an initial velocity of 113 ft/sec.
problem a: Substitute the values into the vertical motion formula
h=-16t(to the power of 2)+vt=c. (v is the initial velocity and c is the starting height.) what is h (height) when the rocket hits the ground?

problem b: Use the quadratic formula to find out how long the rocket will take to his the ground after it is launched. Round to the nearest tenth of a second.
Click here to see answer by stanbon(75887)

Question 82208: can you please assist me to Simplify:
1. (6x-2)+(2x+4)
2. (f2+4f-1) + (2f2- 3f +2)
3.(5+2a+3a2) - ( a2+a-6)
4. solve the equation 4(x-2)=0
Click here to see answer by sofiyacherni(99)

Question 82210: can you assist mme with the following
1. find the product (7x+1)(x2+1)
2. find the product: (2x+6)(x-10)
3.evalute: (a+b)2
4.evalute: (a-2b)(a+2b)
Click here to see answer by sofiyacherni(99)

Question 82238: please assist me with the following:
1. factor 6f2+5f+1
2. factor 12w2+10w-8
3. factor: 20y2-33y+10
factor: -x2-x-6
Click here to see answer by tutorcecilia(2152)

Question 82288: This is from a review packet at school. I just can't seem to get this and would appreciate any help.
Thank you very much!
Divide 2x^2 + 3x^3 +5 - 5x by 3x - 4

Click here to see answer by mariaq(3)

Question 82342: can you assist me with the following.
factor: 4x2-24x+36
factor: 16e2-4
factor: s2-x-6
49y2-25
Click here to see answer by stanbon(75887)

Question 82349: word problem:
Suppose a baseball is shot up from the ground straight up with an initial velocity of 64 feet per second. A function of time, t. This function is s=16t squard+v0t+so.
16 represents 1/g, the gravitational pull due to gravity (measured in feet per second squared.
v0 is the initial velocity (how hard do you throw the object, measured in feet per second squared).
s0 is the initial distance above ground (in feet). If you are standing on the ground, then s0=0.
a)What is the function that describes this problem?
b)The ball will be how high above the ground after 1 second?
c)How long will it take to hit the ground?
d)What is the maximum height of the ball? What time will the masimum height be attained?
Click here to see answer by stanbon(75887)

Question 82373: Please help me with this stuff I don't know much about it and I am on the verge of failing my freshman year becuase of this if you can Please help me ASAP I have a test tomarrow at 11:30 and I got a review and I have no Idea how to work it out.
for example here is a question
a golf ball is hit into the air. The path of the ball can be described by the equation h=70T-5T^2, where H is the height of the ball in meters and T is the time in second.
1. How high is the ball after 3 seconds?
2.After how many seconds will the ball be 169 meters High?
3.When will the Ball hit the ground
I need help with problems like that.My dad, Brother,Mother, and my friends donot understand it well and I asked my teacher but he said I have to figure it out on my own. but I dont even know how to do this problem so how am I supposed to figure it out if I don't even know how to do this stuff.And if I don't know how to do this stuff and don't get this review in he wont give me my test and I will fail and have to take SummerSchool or fail yet agaoin after I tryed hard and worked my butt off to try and figure it out
Please if you can help me do so I woul be much obliged if you would
Thank You, Michael F.
Click here to see answer by askmemath(368)

Question 82386: Given f(x) = �5x � 1, find f(a � 4).
Click here to see answer by Nate(3500)

Question 82410: A home-based company produces both hand-knitted scarves and sweaters. The scarves take 2 hours of labor to produce, and the sweaters take 14 hours. The labor available is limited to 40 hours per week, and the total production capacity is 5 items per week. Write a system of inequalities representing this situation, where x is the number of scarves and y is the number of sweaters. Then graph the system of inequalities.
Click here to see answer by stanbon(75887)

Question 82409: Graph y = �2x + 1.

Click here to see answer by stanbon(75887)

Question 82408: The sum of two numbers is 38. Their difference is 8. What are the two numbers?
Answer:
First number:
Second number

Click here to see answer by stanbon(75887)

Question 82407: Solve the system by addition.
x + y = 1
x � y = 5
Hint: You must find both the x and the y values for full credit

Click here to see answer by stanbon(75887)

Question 82402: Rewrite the equation y = �2x + 3 as a function of x.
Click here to see answer by 303795(602)

Question 82400: Given f(x) = 3x + 2, find f(1).
Click here to see answer by 303795(602)

Question 82398: Find the slope and the y-intercept.
y = 6x � 9

Click here to see answer by 303795(602)

Question 82394: The equation y = 6x � 60 describes the amount of money a class of students might earn from candy bar sales. What are the slope and y-intercept of this line?
Answer:
Slope:
y-intercept:

Click here to see answer by 303795(602)

Question 82301: An object is projected upward from the top of a tower. Its distance in feet above the ground after(t)seconds is given by s(t)= -16t^2+64t+80. How many seconds will it take to reach ground level? The answer is multiple choice.
a. 1 second
b. 4 seconds
c. 5 seconds
d. 8 seconds
Click here to see answer by 303795(602)

Question 82389: Tickets for an event cost $5 for children, $10 for adults, and $8 for senior citizens. The total ticket sales were $2060. There were 50 more adult tickets sold than child tickets, and the number of senior citizens tickets were 3 times the number of child tickets. How many of each ticket were sold?
Hint: You must find all 3 numbers to earn full credit.
Answer:
Child tickets: _________ sold
Adult tickets: _________ sold
Senior citizen tickets: _________ sold

Click here to see answer by ankor@dixie-net.com(22740)

Question 82388: One number is 10 less than another. If 9 times the smaller number minus 2 times the larger number is 36, find the two numbers.
Hint: You must find both numbers for full credit.
Answer:
First number:
Second number:

Click here to see answer by ankor@dixie-net.com(22740)

Question 82353: Can you please explain how to work this problem
Please explain cause I do not understand any of the Equations.

Thank You,
JaMarcus
Click here to see answer by ankor@dixie-net.com(22740)

Question 82468: The problem is A= 2A/3=8+4A
The answers are either...
A= -2.4
A= 2.4
A= 1.3
A=-1.3
A=0
How would you solve this problem?
Click here to see answer by checkley75(3666)

Question 82464: The dimensions of a rectangle are 6cm by 8cm. When both dimensions are increased by equal amounts, the area of the rectangle is increased by 208 square cm. Find the dimensions of the new rectangle.
Click here to see answer by checkley75(3666)

Question 82510: Factor. 12x^4y^3 + 16x^3y^3 � 20x^3y^4
Thanks
Click here to see answer by stanbon(75887)

Question 82392: If y varies directly with x, and y = 54 when x = 9, find the constant of variation k.

Click here to see answer by ankor@dixie-net.com(22740)

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