Friday

October 31, 2014

October 31, 2014

Number of results: 54

**math**

weloo Consider the two parabolas :y1=2x^2-3x-1 and y2=x^2+7x+20. (a) Find the points of intersection of the parabolas and decide which one is greater than the other between the intersection points. (b) Compute the area enclosed by the two parabolas. (c) Use Mathcad to draw the...
*May 8, 2012 by weloo_volley*

**math**

hilp meeee trying .... Consider the two parabolas :y1=2x^2-3x-1 and y2=x^2+7x+20. (a) Find the points of intersection of the parabolas and decide which one is greater than the other between the intersection points. (b) Compute the area enclosed by the two parabolas. (c) Use ...
*April 24, 2012 by weloo_volley*

**math**

hilp meeee trying .... Consider the two parabolas :y1=2x^2-3x-1 and y2=x^2+7x+20. (a) Find the points of intersection of the parabolas and decide which one is greater than the other between the intersection points. (b) Compute the area enclosed by the two parabolas. (c) Use ...
*April 30, 2012 by weloo_volley*

**math**

Question-2; Consider the function f(x)= -cos3x -4sin3x. (a)Find the equation of the line normal to the graph of f(x) when x= pie/6 . (b)Find the x coordinates of the points on the graph of f(x) where the tangent to the graph is horizontal. (c)Find the absolute extrema of the ...
*April 21, 2012 by weloo_volley*

**Algebra 2**

I am creating a project for math in which I have to draw an object using: parabolas, hyperbolas, circles,etc. We use conic section equations to identify where they are on the graph. I have confusion about writing the equation of parabolas. I know the equation is 4px=y^2 but I ...
*June 5, 2007 by mariya*

**Math**

Find the points of intersection of the parabolas y=1/2x^2 and y=1-1/2x^2. Show that at each of these points the tangent lines to the two parabolas are similar Answer (+-1,1/2) Please show and explain all steps thank yo
*November 6, 2013 by Jason*

**Parabolas in standard form!**

Hello, I am having the worst time trying to solve these parabolas and putting them into x-h = a(y-k)^2 form. :( There are two problems that i keep doing something wrong. could someone solve them so I can have a set up for the rest of my problems? :) 3y^2+6y+108x-969=0 and x^2+...
*May 24, 2012 by Kate*

**Math**

1. What is the vertex of each of these parabolas? a. y = (x –7)2 +4 b. y = 3(x + 7)2 – 4
*November 13, 2013 by Sammy*

**algebra 2**

what is a parabolas, circles, ellipse, or hyperbolas
*December 15, 2009 by breanna*

**Calculus**

Find the area of the region enclosed by the parabolas y=x^2 and y+2x-x^2
*May 21, 2014 by Laurie*

**calculus **

find the points of intersection of the parabolas Y=(1r2 x^2) and Y=10x - 2.
*February 18, 2010 by Anonymous*

**calculus **

find the points of intersection of the parabolas Y=(1r2 x^2) and Y=10x - 2.
*February 18, 2010 by Anonymous*

**parabolas**

Find the equation and sketch the parabola that has vertex V (-1; 0) and focus F(-4; 0).
*May 6, 2013 by dylan*

**Calculus Help!!!**

Find c > 0 such that the area of the region enclosed by the parabolas y=x^2-c^2 and y=c^2-x^2 is 13.
*November 21, 2013 by Ryan*

**math**

there are ___ parabolas that have a vertex (-3,-4) and pass through the point (-1,4)
*May 23, 2011 by Anup*

**Math **

Give three examples of the equations of parabolas that have (-2,0) and (6,0) as x-intercepts.
*March 2, 2012 by Nicole*

**MATH HELP**

write the equations of two different parabolas whose vertices are at (3,2).
*November 13, 2013 by vanessa*

**Precal**

What is the standard form of this parabola: -2x^2+16x+24y-224=0 Please Help, parabolas are evil.
*May 25, 2012 by Sam*

**Pre-Calculus**

I'm currently working with parabolas, and I'm not sure if I am doing this specific problem correctly.. 12. x= y^2-6y+6 y= -b/2a = 6/2(1)= 6/2= 3 x= (3)^2+6(3)+6 x= 33 y=3 (33,3) <--- what I graphed
*May 10, 2013 by Caroline*

**Math**

If f(x)=x^2-6x+14 and g(x)=-x^2-20x-k, determine the value of k so that there is exactly one point of intersection between the two parabolas.
*August 17, 2010 by Emily*

**Math**

If f(x)=x^2-6x+14 and g(x)=-x^2-20x-k, determine the value of k so that there is exactly one point of intersection between the two parabolas.
*October 21, 2010 by Emily*

**algebra**

what is the standard equation of the following parabolas?! 1. passes through (-5,1) 2. Direction 2x-9=0 3.E(4,2) as end of LR 4. Focus at (3,0) 5. LR=10 pls answer
*April 27, 2010 by Anonymous*

**Calculus Help**

Let c and dd be positive real numbers. Show that regardless of c,d, the parabolas r=c/(1+cos(theta)) and r=d/{(1-costheta) intersect at rights angles
*December 3, 2010 by Sarah*

**algebra (parabolas)**

find the axis of symmetry and vertex of the function. tell whether it goes upward or downward. y=3*xsquared+6x-2
*March 20, 2011 by Bri*

**algebra (parabolas)**

find the axis of symmetry and vertex of the function. tell whether it goes upward or downward. 1. y=-xsquared+9 2. y=-2xsquared=7x-21
*March 20, 2011 by Bri*

**Math/Algebra**

Does anyone know how to graph quadratic functions (with parabolas). Could someone please help me!!Could you help me with these two problems don't forget to make a chart for x, the equation, the y, and the coordinates. 1. Y=2x^2 2. Y=-5x^2
*March 30, 2009 by Smores*

**Calc 2**

Find c>0 such that the area of the region enclosed by the parabolas y=x^2−c^2 and y=c^2−x^2 is 90.
*February 10, 2012 by Rebecca*

**Calculus 2**

Find c>0 such that the area of the region enclosed by the parabolas y=x^2−c^2 and y=c^2−x^2 is 90.
*February 10, 2012 by Rebecca*

**Calculus**

A rectangle is insribed between the parabolas y=4(x^2) and y=30-x^2. What is the maximum area of the rectangle? Domain: [-3,3] Range:[-2, 40] THANK YOU!
*December 7, 2010 by Anna*

**AP Calculus**

A rectangle is inscribed between the parabolas y=4x^2 and y=30-x^2. what is the maximum area of such a rectangle? a)20root2 b)40 c)30root2 d)50 e)40root2
*December 14, 2010 by Jim*

**Algebra **

Graph parabolas how would i do this y=x^2 + 1 (-3 < or equal to X < or equal to 3)
*April 2, 2012 by BIBIN*

**Calculus kinda with the area of two curves**

II don't even know where to start with this can anyone help?!? Find c>0 such that the area of the region enclosed by the parabolas y=x^2-c^2 and y=c^2-x^2 is 270.
*December 2, 2013 by Roni*

**Calculus Help **

Find the values of c such that the area of the region bounded by the parabolas y = 4x^2 − c^2 and y = c^2 − 4x^2 is 256/3. (Enter your answers as a comma-separated list.)
*May 1, 2014 by Kevin*

**Trig**

A parabola has its vertex on the graph of the line y=3x+1 and passes through (1,10). If it is the same size,? shape, and direction as the graph of y=3x^2, find the equation (s) of all possible parabolas Thanks!!!
*April 24, 2013 by Rebekah*

**Pre calc**

A parabola has its vertex on the graph of the line y=3x+1 and passes through (1,10). If it is the same size,? shape, and direction as the graph of y=3x^2, find the equation (s) of all possible parabolas
*April 23, 2013 by Rebekah*

**math**

region bounded by the parabolas y=x^2 and y=6x-(x^2) is rotated about the x-axis so that a vertical line segment cut off by the curves generates a ring. find the value of x for which we obtain the ring of largest area
*January 28, 2008 by ML*

**algebra (parabolas)**

tell whether the graph opens upward or downward. then find the axis of symmetry and vertex of the graph of the function 1. y=xsquared-5 2. y=-2*xsquared+6x+7
*March 20, 2011 by Bri*

**parabolas**

how do i find the equaion of the following parabolas? 1)intercepts at (2,0),(8,0) and (0,48) 2)turning point at (1,-2) and passing through the origin. can someone please teach me how to do this??thanks! The first: Write you standard equation of a parabola (it has two x ...
*May 20, 2007 by Emma*

**Algebra**

All parabolas are symmetric with respect to a line called the axis of symmetry. A parabola intersects its axis of symmetry at what point? a. vertex b. function c. translation d. y-intercept Is it A. vertex?
*July 4, 2014 by Emma*

**College algebra**

A fountain in a shopping mall has two parabolic arcs of water intersecting. The equation of one parabola is y = -0.25x^2+2x and the equation of the second parabola is y=-0.205x^2+4x-11.75. How high above the base of the fountain do the parabolas intersect? All dimensions are ...
*May 5, 2012 by Missy*

**calculus**

a solid lies between planes perpendicular to x-axis at x=0 and x=17,cross section perpendicular to axis interval 17 greater or equal x & x greater or equal 0 are squares of diagonals go from parabolas y=-2x^(0.5) & y=2x^(0.5). find the volume of the solid
*March 27, 2012 by Anonymous*

**Alg 2 (ASAP)**

I have a parabola vertex (11,3) p is not given, focus pt is not given. I need to find the equation of the parabola. How would I do this w/o p value or focus pt? you cant. Ţhere are an infinite number of parabolas that have that vertex.
*June 5, 2007 by masha*

**Integrated Math 1**

The parabolas y = -3x2 + 10x - 6 and y = -3x2 - 17x + 2 intersect at _____? A.the line y = 27x - 8. B. x=the square root of 2 over 3 and xthe -square root of 2 over 3. C. x=8/27. D. they do not intersect.
*July 8, 2012 by Tifini*

**Functions**

State the domain and range of each function. Justify your answer a) y=1/(x+5) b) y=√1-2x I know how to do domain and range, but I don't remember what shapes these form. It's not parabolas, is it? Then, to justify them, I need to draw them, so that's why I need to know ...
*September 8, 2009 by Sally*

**Math**

i am working with completing the square in parabolas and there's this word problem i just cannot solve..a farmer wants to make a rectangular corral along the side of a large barn and has enough materials for 60m of fencing. Only 3 sides must be fenced, since the barn wall will...
*December 9, 2008 by Callie*

**Algebra: Parabolas**

I have a math problem that requires me to find the focal length of a parabola using the information given on a graph. It is a standard horizontal parabola, the formula being y^2 = ax. The focus point is formula a = 4p. I know that a is positive, because the parabola opens ...
*April 25, 2012 by Anonymous*

**Calculus**

A function f(x) is said to have a removable discontinuity at x=a if: 1. f is either not defined or not continuous at x=a. 2. f(a) could either be defined or redefined so that the new function IS continuous at x=a...
*February 6, 2011 by Abigail*

**math**

I'm having some troubles with these. Thanks in advance. If a>0 find the minimum value. If a<0 find the maximum value. 1. y=-x˛+2x+5 2. y=-2x˛-3x+4 These are functions for parabolas, so f(x)=ax˛+bx+c when a does not equal 0 In both your examples, the "a", which is the ...
*October 31, 2006 by Andrea*

**Calculus**

A function f(x) is said to have a removable discontinuity at x=a if: 1. f is either not defined or not continuous at x=a. 2. f(a) could either be defined or redefined so that the new function IS continuous at x=a...
*February 7, 2011 by Abigail*

**algebra (parabolas)**

you throw a wad of used paper towards a wastebasket from a height of about 1.3 feet above the floor with an initial vertical velocity of 3 feet per second. a. write and graph a function that models the height h (in feet) of the paper t seconds after it is thrown b. if you miss...
*March 20, 2011 by Bri*

**need an answer checked - algebra**

Given a quadratic equation y = ax^2 + bx + c, (i) What is the effect of changing the value of the number c on the parabola? In other word, if two parabolas have the same coefficients a, and b, but different values for c, how will their graphs differ? My answer: If you have ...
*October 6, 2007 by Lizzy*

**need an answer checked - algebra**

Given a quadratic equation y = ax^2 + bx + c, (i) What is the effect of changing the value of the number c on the parabola? In other word, if two parabolas have the same coefficients a, and b, but different values for c, how will their graphs differ? My answer: If you have ...
*October 6, 2007 by Lizzy*

**math**

How do I know that x^2-7=y is a function? thanks you know its a function because its a parabola (x^2) parabolas are functions because there is only one x value per y value. So I know it is a function because it has (x^2)? Is that the rule? If it has x^2, it's a function and if...
*March 20, 2007 by Mimi*

**Physics**

I have posted this one before, but the help I received went over my head... Firemen are shooting a stream of water at a burning building. A high-pressure hose shoots out the water with a speed of 21.0 m/s as it leaves the hose nozzle. Once it leaves the hose, the water moves ...
*September 18, 2006 by JC*

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