Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 80960: Please help me solve this problem: Given a line containing the points (1,3), (2,4), (3,5) determine the slope-intercept form of the equation, give one additional point of this line and graph the function.
Equation of line in slope-intercept form:
Show your work here:
Give one additional point in (x,y) form that would fall on this line:
Graph the function:
Click here to see answer by checkley75(3666)   |
Question 81046: This problem is not from my book. I have tried to answer it but don't feel I am correct, and I need every point possible to pass this course.
Problem
What is the minimum product of two numbers whose difference is 4? What are the numbers?
Here is what I have done.
n(n+1)=-4
n^2 + n = -4
n^2 + n - 4 = 0
(n+1)(n-4)
The numbers are 1, -4, the minimum product is -4
Thank you so much for your help. Like I said I don.t think my solution is correct.
Click here to see answer by scott8148(3382)  |
Question 81171: A small firm produces both AM and AM/FM car radios. The AM radios take 15 hours to produce, and the AM/FM radios take 20 hours. The number of production hours is limited to 300 hours per week. The plants capacity is limited to a total of 18 radios per week, and existing orders require that at least 4 AM radios and at least 3 AM/FM radios be produced per week. Write a system of inequalities representing this situation. Then, draw a graph of the feasible region given these conditions, in which x is the number of AM radios and y the number of AM/FM radios.
You must show a graph to earn credit for this question.
Your graph must indicate shading.
You can use words to tell me if your line is solid or dashed.
Hint: There should be 4 separate lines on your final graph.
Click here to see answer by ankor@dixie-net.com(6691)  |
Question 81129: Problem
The length, width, and height of a box are x, 2x, and 3x-5 inches, respectively. Write a polynomial V(x) that represents its volume. Find V(3)
Here it what I have.
V= x^2 (x + 2)(3x - 5)
= x^2 + 6x - 10
If you put 3 in place of x the volume = 180
I don't know if I am corret and would appreciate your input and help. Thank you
Click here to see answer by tutor_paul(424)  |
Question 81163: A coffee merchant has coffee beans that sell for $9.00 per pound and $12.00 per pound. The two types are to be mixed to create 100 lb of a mixture that will sell for $11.25 per pound. How much of each type of bean should be used in the mixture?
______lbs at $9 per pound
______lbs at $12 per pound
Click here to see answer by stanbon(26259) |
Question 81296: Problem
Volume. The length, width, and height of a box are x, 2x, and 3x - 5 inches, respectively. Write a polynomial V(x) that represents its volume. Find V(3).
This is what I have.
V(x) = x^2(x + 2)(3x - 5)
When you put V(3) into the equation the volume= 180
I would appreciate any help with this question. Thank you.
Click here to see answer by stanbon(26259) |
Question 81296: Problem
Volume. The length, width, and height of a box are x, 2x, and 3x - 5 inches, respectively. Write a polynomial V(x) that represents its volume. Find V(3).
This is what I have.
V(x) = x^2(x + 2)(3x - 5)
When you put V(3) into the equation the volume= 180
I would appreciate any help with this question. Thank you.
Click here to see answer by Earlsdon(4898) |
Question 81322: Please helllllppp!
The price p and the quantity x sold of a certain product obey the demand equation:
x = -20p + 500
0 less than or equal to p which is less than or equal to 25
a) express the revenue R as a function of x
b) what is the revenue if 20 units are sold?
c) what quantity x maximizes revenue? what is the maximum revenue?
d) what price should the company charge to maximize revenue?
Thank you thank you
Click here to see answer by stanbon(26259) |
Question 81380: Problem:
The length of a rectangle is 2 inches more than twice its width. If the perimeter of the rectangle is 34 inches, find the dimensions of the rectangle.
Answer:
Width: ___________ inches
Length: ___________inches
Click here to see answer by askmemath(368) |
Question 81503: Hi! This is my problem: Please tell me if I am anywhere near the right direction~~ Thanks~!!!!!
Solve by completing the square:
x2 + 8x + 2 = 0
my answer:
x^2+8x=-2
x^2+8x+16=16-2
x^2+8x+16=14
(x+4)^2=14
x+4=+or-√14
x=√(14) -4 or x=√(14) + 4
Click here to see answer by stanbon(26259) |
Question 81517: Hi! I always like to try to figure these out before I ask for help, so can you tell me if I am anwhere where I need to be on this one? Thanks!!!
Solve using the square root property:
2x2 3 = 15
2x^2=15
x=√15 or x=-√15
x=√3√5 or x=-√3√5
Click here to see answer by mathdoc316(9) |
Question 81517: Hi! I always like to try to figure these out before I ask for help, so can you tell me if I am anwhere where I need to be on this one? Thanks!!!
Solve using the square root property:
2x2 3 = 15
2x^2=15
x=√15 or x=-√15
x=√3√5 or x=-√3√5
Click here to see answer by Earlsdon(4898) |
Question 81602: Hello :-) I need help in solving using the quadratic formula: x^2-3x = 4x-1. Can you please help? This is a homework assignment due Tuesday. Please show me the steps on how to solve it. Thank you so very much!
Click here to see answer by Earlsdon(4898) |
Question 81612: I am stuck on this problem, can you help me out please? Thank you!
2) For the function y = x2 - 4x - 5, perform the following tasks:
a) Put the function in the form y = a(x - h)2 + k.
Answer:
Show work in this space
b) What is the equation for the line of symmetry for the graph of this function?
Answer: 0
c) Graph the function using the equation in part a. Explain why it is not necessary to plot points to graph when using y = a (x h)2 + k.
Show graph here.
Explanation of graphing.
d) In your own words, describe how this graph compares to the graph of y = x2?
Click here to see answer by stanbon(26259) |
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