Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 131781: I am not sure how to complete.
Thanks
f(x) = 3(x-3)^2
The vertex is:
The line of symmetry is:

Click here to see answer by stanbon(57967)

Question 131786: Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function, and then graph the function.
f(x) = 4x^2 - 24x + 38
I believe the vertex points are 3, 2.
The line of symmetry would then be 3 and then I get stuck. Is 2 a maximum or minimum value and I need to know that to graph the function. So, I'm stuck. Can someone help?
Click here to see answer by solver91311(17077)

Question 131269: If f(x)=x+4 and g(x)=2x^2-x-1, find the composition (fog)(2)
Please help me I get so far and then I can not get the rest. Thank you
Click here to see answer by scott8148(6628)

Question 131782: I am not sure how to complete.
Thanks
Greatest common factor
4x^4-24x^3+8x^2
Click here to see answer by checkley71(8403)

Question 131278: Please help me. I am so clueless with this question. It asks: In the equation ax^2+bx+c=0, the value of b^2-4ac is called the dicriminant of the quadratic equation. What does this value tell you about the real roots of the equation?
I tried to solve this, but math is not my best subject. Please help me! Thank You=)
Click here to see answer by scott8148(6628)

Question 131612: y=-3x^2-6x+4
Click here to see answer by ntnk(54)

Question 131836: The length of a rectangle is approximately 1.6 times the width. Find the dimensions of a rectangle if its area is 9000m^2. I think I understand this problem, but could use some help. Thanks!
Click here to see answer by edjones(7569)

Question 131830: The current in a stream moves at a speed of 3mph. A boat travels 45 miles upstream and 45 miles downstream in a total time of 8 hours. What is the speed of the boat in still water?
Any help would be greatly appreciated on this!
Click here to see answer by stanbon(57967)

Question 131780: I am not sure how to complete.
Thanks
Factor 6-5b+b^2
Click here to see answer by edjones(7569)

Question 131840: please help me solve.
x^2=11x=24=0
Click here to see answer by stanbon(57967)

Question 131776: Any help is appreciated.
Simplify
3sqrt-1/8
Click here to see answer by edjones(7569)

Question 131778: Any help is appreciated.
Use quadratic formula
2x^2-x=-3

Click here to see answer by edjones(7569)

Question 131779: Solve the formula for the given variable. Assume all variables represent nonnegative numbers.
A=5s^2, for s.

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Question 131756: Please help me solve.
Thanks
(x+16)(x-1)(x+10)greater than o
Click here to see answer by edjones(7569)

Question 131775: Solve by completing the square.
x^2 + 3/2x = 3
I am stumped because the problem isn't set up the way I've been accustomed to. Can you help me?
Click here to see answer by edjones(7569)

Question 131866: Please help. Much apppreiated.
Express using a positive exponent
r^-2
Click here to see answer by benni1013(197)

Question 131864: Please help. Much apppreiated.
Divide and simplify
y^2/y^11
Click here to see answer by benni1013(197)

Question 131879: Solve for x.

2x^2 = -9x - 9

Click here to see answer by checkley71(8403)

Question 131865: Please help. Much apppreiated.
rewrite with a rational exponent
6sqrt19=
Click here to see answer by checkley71(8403)

Question 131942: Solve
x^2+18x-4=0
Click here to see answer by josmiceli(9817)

Question 131943: I need help with this problem. Thank you for your help!
Solve (h=16t^2 + vt + s) for t
Click here to see answer by solver91311(17077)

Question 131948: the sum of the lengths of the two legs of a right angle triangle is 14 cm. find the length of the shortest hypotenuse.
Click here to see answer by checkley71(8403)

Question 131950: a factory measuring 80m by 60m is to be surrounded be a sidewalk uniform in width. if the area of the factory is doubled by extending all sides, what is the width of the sidewalk(round to the nearest tenth)?
Click here to see answer by solver91311(17077)

Question 131940: If a basketball player has a vertical leap of about 35 inches, what is his hang tome?Hang time function is v=48T^2
Click here to see answer by checkley71(8403)

Question 131939: If a basketball player has a vertical leap of about 35 inches, what is his hang tome?Hang time function is v=48T^2
Click here to see answer by checkley71(8403)

Question 131888: The problem states to graph the quadratic equation. It also states to label the ordered pairs for the vertex and the y-intercept. The equation reads:
y = x^2 + x - 2
Any help would be greatly appreciated. Thanks!
Click here to see answer by checkley71(8403)

Question 131887: The problem states to graph the quadratic equation. It also states to label the ordered pairs for the vertex and the y-intercept. The equation reads:
y = x^2 + x - 2
Any help would be greatly appreciated. Thanks!
Click here to see answer by checkley71(8403)

Question 131963: Please help me solve this problem. Thank you very much!
(4)/(m^2-7)=1
Click here to see answer by rapaljer(4667)

Question 131997: Find the standard form of the equation for the parabola having a vertex (-3,6) that contains the origin
Click here to see answer by rapaljer(4667)

Question 131997: Find the standard form of the equation for the parabola having a vertex (-3,6) that contains the origin
Click here to see answer by stanbon(57967)

Question 131978: I have a problem with factoring. I don't know how to do it. I just need to know how to factor this problem then I think I can do the rest. The directions say solve each inequality algerbraically.
16. 25x2-40x+16<0

24. x3+2x2-3x>0
Thank you
Tara
Click here to see answer by solver91311(17077)

Question 131986: x2-3x-4=0
Click here to see answer by rapaljer(4667)

Question 131941: Find the variation constant and an equation of variation where y varies directly as x and y80 when x=10
THe variation constant is K=
The equation of variation is y=
Click here to see answer by bucky(2189)

Question 132066: I need help solving the a word problem. The prefessor was able to give a breaksown of the two equations that will solve the word problem. Can you help me solve these by the substitution method? Thank you!
1.25x=1.10y=1520
and
1.10x+1.25y=1535
Click here to see answer by josmiceli(9817)

Question 132089: The area of a cylinder is 14 inches.What do I use to find it circumference?
Click here to see answer by stanbon(57967)

Question 132084: Find the vertex, line of symmetry, the maximum/minimum value of f(x). Then, graph the function.
f(x) = -2(x+1)^2 + 8
Vertex is
Line of symmetry
Max/min value
Click here to see answer by josmiceli(9817)

Question 132098: An electric company is placing utility poles along a road. It is determined that 5 fewer poles per kilometre would be necessary if the distance between the poles were increased by 10metres. How many poles are being placed each km?
Click here to see answer by josmiceli(9817)

Question 132081: This is not from a textbook.
Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, ax^2 + bx + c = 0
solution: 7, only solution
Equation is 0 = ___________
I'm just starting to be able to understand how to compute these kind of equations so to do it backwards is confusing me totally.
Click here to see answer by stanbon(57967)

Question 132106: I need help solving these two seperate problems by using the substitution method. Can anybody help?
1. 1.25x+1.10y=1520
2. 1.10x+1.25y=1535
Please somebody help me!
Click here to see answer by solver91311(17077)

Question 132115: I have no idea how to do the following please help!
Suppose that a market research company finds that a price of p=$20, they would sell x=42 tiles each month. If they lower the price to p=$10, then more people would purchase teh tile, and they can expect to sell x=52 tiles in a month's time. Find the equation of the line for the demand equation. Write your answer in the form p=mx+b.
(write the equation using two points in the form(x,p)

Click here to see answer by stanbon(57967)

Question 132119: Areas of 2 rectangles are 15 sq.cm and 60 sq.cm.What is the ratio from the 1st to the 2nd.
ThanKs for the help!
Click here to see answer by rapaljer(4667)

Question 132082: Give exact and approximate solutions to 3 decimal places.
(x - 4)^2 = 81
The exact solutions are: __________
The approximate solutions are: ____________

Click here to see answer by rapaljer(4667)

Question 132120: Area of a rectangle is 15 sq.cm The length is 5 cm.What is the width?
ThanKs for the help!
Click here to see answer by rapaljer(4667)

Question 132033: The sum of two numbers is 18. If the sum of their squares is a minimum find the numbers.
Click here to see answer by solver91311(17077)

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