Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 361942: Solve
a^3+4s^2-45a=0
Answers
A) 0,-5,9
B) 5,-9
C) -36,-9
D)0,5,-9
ps ^ means to the power of ....thanks
Click here to see answer by Theo(13342)

Question 361942: Solve
a^3+4s^2-45a=0
Answers
A) 0,-5,9
B) 5,-9
C) -36,-9
D)0,5,-9
ps ^ means to the power of ....thanks
Click here to see answer by ewatrrr(24785)

Question 361941: Solve
4x^3+x^2-36x-9=0
Answers
A) 3,(1/4)
B) -9,9,-(1/4)
C) -3,3,-4
D) -3,3,-(1/4)
ps the ^ means to the power of....thanks soo much
Click here to see answer by edjones(8007)

Question 362029: I am having a problem grasping the factoring of quadratic equations. I have an example 3x^2+18x+25=0 Now from what I understand I am suppose to find two numbers that add up to 25 that also make 18 or so I thought. I am confused is there anyways to simplify this for me. I understand once I figure out this how to plug in the numbers for the x=-b sqrt of b^-4ac over 2a to get my answers
Click here to see answer by Alan3354(69443)

Question 362030: Good Afternoon, Sam here. I am having a terrible time trying to solve this story or word problem. The trouble I am having is getting the exact answer as the book shows. Could someone who is an expert is this area please show me, by covering all steps how I would attack this type of problem.
Section 11.5, #9
Directions: Solve
The total function p(x) for a company producing x thousand units is given by
P(x)=-〖2x〗^2+28x-80 (it should be -2x squared)
Find the values of x for which the company makes a profit. [Hint: company makes a profit when P(x)>0].
the answer my textbook provides is: x is between 4 thousand units and 10,000 units.
I have no idea how to even get started, or what steps I should use to get the correct answer. Your help is greatly appreciated.
Click here to see answer by edjones(8007)

Question 362072: I am in serious need of help with quadratic equations. If someone could be so kind as to show me the exact steps I need to solve the problem below, I would be most thankful.
11.3, #2
Directions: Use the quadratic formula to solve equation.
x^2+12x+19=0 (should be x squared)
The answer I have that was obtained from my book is: {-6 ,�√17}
But, I don't understand how they get to this answer. I am thankful for your help!
Click here to see answer by Fombitz(32388)

Question 362033: Happy Tuesday everyone! I am looking for some expertise when it comes to solving "story" or "word" problems dealing with quadratic equations. My teacher requires that when we work through a problem that we show her all of the steps to show what we did to get our answer. I was wondering if you could help me?
11.5, #10
Directions: Solve
10.) The daily number of request, f(x), for a song that a local radio station receives can be modeled by f(x)=x^2-5x+11 (it should read x squared)
where x is the number of days after the song has been released. During which time period will the daily number of requests be below 7?
The book shows the answer to be: between day 1 and 4. But, I have not a clue what steps I need to perform to get this as my final outcome. Thanks so much!
Click here to see answer by ewatrrr(24785)

Question 362086: The parabola with vertex (2,-4) and passing through the point(8,6)is given by the equation y=Ax2+Bx+C, where
A=_______ B=___________ C=__________
Click here to see answer by Fombitz(32388)

Question 362065: Good Afternoon,
Could someone please assist me that has the knowledge that I lack and that's the exact steps on how write a quadratic equation in standard form with the given soltuion set. I am required to show all of my work, so if you could show and explain each step, I would be most grateful.
11.3, # 16:
Directions: Write a quadratic equation in standard form with the given solution set.
x^2-5x-6=0 (should read x squared-5x-6=0)

Also, the book shows the answer to be {-1,6}I appreciate your assistance.
Click here to see answer by ewatrrr(24785)

Question 362161: Determine the coordinates of the vertex and the roots of the quadratic equation 15x^2-14x-8=0
Click here to see answer by solver91311(24713)

Question 362312: What's the quadratic equation if X= -2 square roots of 5
Click here to see answer by mananth(16946)

Question 362320: What's the quadratic equation if X=2+i square root of 11, X= 2-i square root of 11
Click here to see answer by mananth(16946)

Question 362310: What's the quadratic equation if X=7i and X=-7i
Click here to see answer by Fombitz(32388)

Question 362332: whats the x intercepts of the equation 5x^2-13x-6?
Click here to see answer by Fombitz(32388)

Question 362374: (x-3)(x+5)=7 i need to solve this problem. I tried factoring it out but it doesnt work so i need to use the quadratic equation to find the answers
Click here to see answer by mananth(16946)

Question 362188: how do i 4(2x-7)+10<38
tiny200819@gmail.com
Click here to see answer by Fombitz(32388)

Question 362456: If x^2 - 3x + 1 = 0 then what is the value of 2x^2 - 6x + 19 ?
Click here to see answer by Fombitz(32388)

Question 362261: x^-2/3x+13/36=o can u plz include "i" in the aswer and show how you got it?
Click here to see answer by Fombitz(32388)

Question 362551: Good Afternoon, I was hoping someone could assist me as I work through the following problem. If you could be so kind as to show all of the steps you would utilize to solve the problem below, I would greatly appreciate it!
11.3, #5,
Directions: Find the axis of symmetry of the parabola defined by the given quadratic function.
f(x)=(x+2)^2+8=x
Thank you so much!

Click here to see answer by Fombitz(32388)

Question 362554: Hey, I am hoping someone could help me out. I am completely stumped on this problem I have to do for my homework. If you are a expert in this area, could you possibly show me the steps to solve the equation? I appreciate it!
Section 11.3, #7
Directions: Find the range of the quadratic function
f(x)=x^2+3 (should be x squared)
answer shown in my book is: {y/y ≥3} I have no idea how to get to this, please help!
Click here to see answer by Fombitz(32388)

Question 362444: solve: 15x-15>x+35
True or False?
2 x -3 > 3 x -3
2 x -3 < 3 x -3

Click here to see answer by ghali0079(12)

Question 362564: A friend of mine told me that if you need help with algebra this was the website to submit your question. I am confused on what steps to take the get the final answer. If someone could be so kind as to show me what to do, I would be appreciate it. I know it's time consuming, but could you please work the problem in all vital steps (maybe with some direction) so I know how to complete the next series that I have to do for my assignment?
11.4, #9
Directions: Solve the equation by making an appropriate substitution.
x^(-2)+〖8x〗^(-1)=-10 (should be x - squared, and 8x to -1 power)

Click here to see answer by Alan3354(69443)

Question 362560: Happy Wednesday all,
I would like to request some help with the problem I have listed below. If you could show me all the steps, so that I know how you found the final answer, that would be great! I am at a loss, and confused too.
Section 11.4, #3
Directions: Solve the equation by making an appropriate substitution.

x-512-16√(x ) =0
answer in the book is= 1024 could you help me work it out? thanks!

Click here to see answer by HasanSahin(52)

Question 362624: the height of an object,h(t), is determined by the formula h(t)=-16t^2+256T, where t is time, in seconds. Which statement about the object is true?
Click here to see answer by Fombitz(32388)

Question 362659: -14=6x-8(x+3)

Click here to see answer by rfer(16322)

Question 362780: 2x^2-3x-3=0
Click here to see answer by Manny Pacquiao(82)

Question 362800: What are the solutions for the equation: (sqroot 800) Can you show me the steps please? Thank you
Click here to see answer by Manny Pacquiao(82)

Question 362811: Good evening, I'm having trouble determining how to find the x-intercepts
Click here to see answer by Manny Pacquiao(82)

Question 362971: Determine, without graphing, whether the given quadratic function has a maximum value or a minimum value and then find that value.
f(x) = -x2 - 3x - 8
Click here to see answer by robertb(5830)

Question 362974: Solve the system of equations by substitution.
5X-2Y=-1
X+4Y=35
Click here to see answer by mananth(16946)

Question 362973: The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches: What rainfall produces the maximum number of mosquitoes?
Click here to see answer by robertb(5830)

Question 362972: Solve the system of equations by elimination.

2x+12y=-50
10x+3y=35
please help
Click here to see answer by mananth(16946)

Question 362977: Solve the system of equations. If the system has no solution, say that it is inconsistent.

x+y=7
x+y=8
Click here to see answer by Fombitz(32388)

Question 362938: Create the quadratic equation in the form y=ax^2+bx+c using the point (0,4)as one point and the point (4,-5) as the vertex. Enter the a,b,c values as common factors in reduced form.
Click here to see answer by Fombitz(32388)

Question 362978: Solve the system of equations.

x-y+z=-8
x+y+z=-6
x+y-z=4
Click here to see answer by vasumathi(46)

Question 362893: mary works due north from home.her husband ben works due east.they leave from work at the same time. by the time mary is 5 miles from home the distance between them is one mile more than ben distance from home. how far is ben? __ miles ??
Click here to see answer by mananth(16946)

Question 363073: If a pro basketball player has a vertical leap of 20in, what is his hang time V=48t^2. Please help
Click here to see answer by ewatrrr(24785)

Question 363071: Jack mows his lawn in 5hrs and Marilyn mows the same lawn in 6hrs how much time would it take if they did it together.Shelly
Click here to see answer by ewatrrr(24785)

Question 363172: Let G(x)=(x^2)/(x^2+4) and suppose that we write G(x)=f(h(x)), with h(x)=x^2.
Then f(x)=Ax/(x+B),where
A=______ B=_______
Click here to see answer by Fombitz(32388)

Question 363145: a2-16=0
Click here to see answer by Fombitz(32388)

Question 363193: f(x)=-30t^2+120t+0 how would you explain when f(x)=60
Click here to see answer by Fombitz(32388)

Question 363208: Let G(x)=(2+x^(1/3))^8 and suppose that we write G(x)=f(g(h(x))) with h(x)=x^(1/3), g(x)=A+x and f(x)=x^B
A=_____________ B=______________
Click here to see answer by stanbon(75887)

Question 363224: Solve
2x^2+8x-12=0
Click here to see answer by Fombitz(32388)

Question 363276: A carpenter is building a rectangular room with a fixed perimeter of 344ft. What dimensions would yield the maximum area? What is the maximum area?
The length that would yeild the maximum area is ? ft
The width that would yield the maximum area is ? ft
the maximum area is ? sq ft.
i am confused on the steps
i know that i would use a=lw formula.
help please.
Click here to see answer by edjones(8007)

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