Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 132282: Solve.
7x + x(x-3) = 0
Find the x-intercepts of f(x)= 7x + x(x-3)
a. What are the solutions?
b. What are the x-intercepts?
Please help, I keep getting confused and told I do not have the correct answer.
Click here to see answer by josmiceli(19441)

Question 132286: Can Someone please help me with this.I asked this question before but nonone answered so I did it on my own,but i want to know if its correct.
th difference between 2x^2+4xy-3 and x^2-2xy-4
My answer:x^2+6xy+1,is it correct?
Thank You!
Click here to see answer by edjones(8007)

Question 132263: Evaluate:
14a/b for a=10 and b=2
HELP
Click here to see answer by sofiyacherni(99)

Question 132263: Evaluate:
14a/b for a=10 and b=2
HELP
Click here to see answer by edjones(8007)

Question 132261: Find decimal notation.
22/25
Would this be 0.88??
Click here to see answer by sofiyacherni(99)

Question 132253: What percent of 160 is 56?
Help again please.
Click here to see answer by sofiyacherni(99)

Question 132298: Can You help me solve this,please.
Can you show me how to factor (2x^3y^2+12xy)
Thank YOu!!!
Click here to see answer by jim_thompson5910(35256)

Question 132220: Solve. 7x + x(x-3) = 0
Also, find the x-intercepts of f(x) = 7x + x(x+3)
a. what are the solutions?
b. what are the x-intercepts?
Click here to see answer by edjones(8007)

Question 132319: please help me, this is the last problem i couldnt solve for my assignment.

A FACTORY MEASURING 80m BY 60m IS TO BE SURROUNDED BY A SIDEWALK UNIFORM IN WIDTH. IH THE AREA OF THE FACTORY IS DOUBLED BY EXTENDING ALL SIDES, WHAT IS THE WIDTH OF THE SIDEWALK (ROUND TO THE NEAREST TENTH)?
thank you
Click here to see answer by checkley71(8403)

Question 132250: Divide if possible: -64/8
Help please. Believe it or not I am only asking 4 or 5 questions out of 110. I am terrible at math.
Click here to see answer by josmiceli(19441)

Question 132336: find the slope of the line that passes through each pair of points.
1) (7/3, 4/3)(-1/3, 2/3)
Click here to see answer by nycsharkman(136)

Question 132251: Add:

29+(-42)+510+(-397)+52(-792)
Help me please. I do not understand am i supposed to subtract all the ones in parenthisis then add the rest, then subtract the total parenthisis from the total of the ones not in parenthesis?
Click here to see answer by checkley71(8403)

Question 132179:

the difference between 2x^2+4xy-3 and x^2-2xy-4?
My answer is x^2+6xy+1.
Thanks or your time!
Click here to see answer by checkley71(8403)

Question 132354: Y=(x-4)(x+2) I am having trouble graphing the parabola.
Click here to see answer by stanbon(75887)

Question 132360: 5x+y=1,What does M equal?
Thank for your help!!
Click here to see answer by josmiceli(19441)

Question 132374: Please help me solve this.
Chnage the equation,x-y=4 to the form y=mx+b.
Thank You!!
Click here to see answer by oscargut(2103)

Question 132374: Please help me solve this.
Chnage the equation,x-y=4 to the form y=mx+b.
Thank You!!
Click here to see answer by josmiceli(19441)

Question 132419: Determine whether the following equations have a solution or not? Justify your answer.
5x2 + 8x + 7 = 0

Click here to see answer by jim_thompson5910(35256)

Question 132421: Determine whether the following equations have a solution or not? Justify your answer
2x2 + x - 1 = 0

Click here to see answer by jim_thompson5910(35256)

Question 132426: Solve.
6x^4-19x^2+10=0
I tried using the solver and the answer didn't look right to me. Can you show me how to solve so I can understand the steps.
Click here to see answer by checkley71(8403)

Question 132423: Determine whether the following equations have a solution or not? Justify your answer.
4/3x2 - 2x + 3/4 = 0

Click here to see answer by edjones(8007)

Question 132423: Determine whether the following equations have a solution or not? Justify your answer.
4/3x2 - 2x + 3/4 = 0

Click here to see answer by checkley71(8403)

Question 132375:
Please help me solve this.
What is the solution to th system of equations y=2x and y=-x+3?
Thank You for your help!

Click here to see answer by checkley71(8403)

Question 132373:
Please help me solve this equation.
y=3x-4.Where is the point on the line.
Thank YOU!
Click here to see answer by checkley71(8403)

Question 132466: Determine whether the following equations have a solution or not? Justify your answer.
2x2 + 5x + 5 = 0

Click here to see answer by checkley71(8403)

Question 132474: I was asked to simplify this problem. I have no idea where to start.
4x^2-13x+3 / 8x^2-2x * 6x^2+6x / x^2-6x+9
Thank you
Tammy Bolton
Click here to see answer by jim_thompson5910(35256)

Question 132538: Rita rows 12 km upstream and 12 km downstream in 3 hours. The speed of her boat in still water is 9 km/hr. Find the speed of the stream
Click here to see answer by josmiceli(19441)

Question 132529: Determine whether the following equations have a solution or not? Justify your answer.
p2 - 4p + 4 = 0

Click here to see answer by elima(1433)

Question 132532: Determine whether the following equations have a solution or not? Justify your answer
If x = 3 and x = -5, then form a quadratic equation
Click here to see answer by solver91311(24713)

Question 132560: If a pro-basketball player has a vertical leap of about 30 inches, what is his hang time? Use the hang time function: V = 48T^2
So I guess the problem would be set up as: 30 = 48T^2?
But, now for some reason I'm stuck. Please help.
Click here to see answer by tutorcecilia(2152)

Question 132534:

Solve the following Quadratic equation x^2+7=3x
Click here to see answer by checkley71(8403)

Question 132622: Translate to an algebriac expression.
Twice d
Click here to see answer by jim_thompson5910(35256)

Question 132624: Translate to an algebriac expression.
1 more than d
Can someone please help me with this?
Click here to see answer by jim_thompson5910(35256)

Question 132626: simplify
-40xz/250xz
HELP!
Click here to see answer by jim_thompson5910(35256)

Question 132531: Determine whether the following equations have a solution or not? Justify your answer
3z2 + z - 1 = 0

Click here to see answer by checkley71(8403)

Question 132625: Simplify: 8log10
Click here to see answer by josmiceli(19441)

Question 132530:
Determine whether the following equations have a solution or not? Justify your answer
m2 + m + 1 = 0

Click here to see answer by checkley71(8403)

Question 132629: The length of a rectangle is three times the width. The area is 108 cm squared. Find the dimensions of the rectangle.
Click here to see answer by stanbon(75887)

Question 132637: 9x-8=5x
Can someone help me with this.
Click here to see answer by jim_thompson5910(35256)

Question 132631: The length of a photograph is 1cm less than twice the width. The area is 23cm squared. Find the dimensions of the photograph.
Click here to see answer by checkley71(8403)

Question 132648: Collect like terms.
17y-y=

Click here to see answer by jim_thompson5910(35256)

Question 132648: Collect like terms.
17y-y=

Click here to see answer by stanbon(75887)

Question 132645: Two lines have slopes 2k-4 and k+6. What value(s) of k will produce perpendicular lines? I think the answer is k=-4+or- sqrt66/2????????
Click here to see answer by jim_thompson5910(35256)

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