Questions on Algebra: Conic sections - ellipse, parabola, hyperbola answered by real tutors!

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Algebra: Conic sections - ellipse, parabola, hyperbola

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Question 115143: I need to find the center,vertices, and foci of the ellipse

Click here to see answer by Edwin McCravy(2922)

Question 115470: find the coordinates of the vertex for the parabola defind by the given quadratic function.
f(x) = 3-x^2+2x
Click here to see answer by stanbon(26297)

Question 115813This question is from textbook Fund of Alg and Trig
: I couldn't find a formula for this problem. I not sure how to so this. Can anyone help?
Find an eqs for the ellipse that has its center at the origin and satisfies the given conditions.

Vertical Major axis of length 7, minor axis of length 6
ThanksThis question is from textbook Fund of Alg and Trig

Click here to see answer by stanbon(26297)

Question 116023: How do I identify this equation as a circle and to specify the center and the radius?

I worked on the equation and made it into the (x-h)^2+(y-k)^2=r form:

but I don't understand how the radius can be zero.
Click here to see answer by stanbon(26297)

Question 116335This question is from textbook
: A record label uses the following function to model the sales of a new release. a(t)=-90t squared + 8100t. The number of albums sold as a funtion of time, t, in days. On which day were the most albums sold? what is the maxium number of albums sold on that day.This question is from textbook

Click here to see answer by josmiceli(3013)

Question 116333This question is from textbook
: 3 over 2 x - 5 over 3y + 1 over 6 z =0 for y when x=4 and z =3This question is from textbook

Click here to see answer by ilana(236)

Question 116333This question is from textbook
: 3 over 2 x - 5 over 3y + 1 over 6 z =0 for y when x=4 and z =3This question is from textbook

Click here to see answer by MathLover1(1183)

Question 116546This question is from textbook College Algebra
: Alright here is my question: Write the equation of the ellipse in standard form and find the coordinates of the center, foci, and vertices.
x^2+10x+36y=1
I got this so far- x(x+10)+6y(6y)=1This question is from textbook College Algebra

Click here to see answer by scott8148(3385)

Question 117277: I need some real help here. I have researched to find better explnations as to what the semi major axis is so I can do the math but I can't find it. I know the final answer should be between 0 and 1. This is the problem...
A satellite has an elliptical orbit around the earth with one focus at the earth's center, E. As indicated, the Earth's radius is 4000 miles, the highest point that the satellite is from the surface of the earth is 800 miles and the lowest is 200 miles. find the eccentricity of the satellites orbit.
Click here to see answer by stanbon(26297)

Question 117445: Sketch graph of the following conic sections.
2 2
(x-3) +(y-1) =36
Click here to see answer by Fombitz(2113)

Question 117654: what is the equation for finding the vertex to y=(1/4)(x^2-2x+5)
Click here to see answer by MathLover1(1183)

Question 117685: How do I work my way through a math problem in finding the equation of an ellipse in standard form with vertices (2,-4) and (2,-10) and Foci 92,-5) (2,-9)?
Click here to see answer by stanbon(26297)

Question 117693: I can go back and graph what i see out of problems but not write the equation correctly. how do i write an equation for a hyperbola in standard form with vertices (0,8) (0,-8) and asymptotes y=positive or negative 4x?
Click here to see answer by stanbon(26297)

Question 117842: I need help to solve a equation in ellipse form. What is the X-variable equal to?
Click here to see answer by MathLover1(1183)

Question 117797: can somebody help me with this question?
write the equation of the hyperbola in standard form having the given properties

center(0,0); vertices(+_3,0); foci(+_5,0)
Click here to see answer by misscrt(37)

Question 117291: Graph the ellipse and find the coordinates of the center vertices and foci.
25x^2+16y^2=400
Click here to see answer by Edwin McCravy(2922)

Question 117294: write the equation of the ellipse in standard form having the given properties.
center(4,6) vertex(9,6)(0,8) is on the ellipse
Click here to see answer by Edwin McCravy(2922)

Question 117178: This is tricky for me, A parabola has a vertical axis and passes through the points (0,3), (1,7) and (-2,-17). Find the equation of the parabola. use y=ax^2+by+c
Click here to see answer by scott8148(3385)

Question 118143This question is from textbook

: trace the hyperbola y^2/36 - x^2/64 = 1This question is from textbook

Click here to see answer by checkley71(8405)

Question 118142This question is from textbook

: trace the hyperbola x^2/16 - y^2/9 = 1This question is from textbook

Click here to see answer by Nate(3495)

Question 118267: How do you write this equation of ellipse in simple form?
3x^2 + 4y^2 + 8y=8

* I tried dividing everything by eigth leaving me with:
3x^2/8 +y^2/2 + y=1
But when i checked to see if i had the right answer i got it wrong this is the correct answer:
x^2/4 + (y+1)^2/3=1

I don't understand why i got the problem wrong.

Click here to see answer by jim_thompson5910(13794)

Question 118336: I am trying to help my grandson with his algebra. I have forgotten so much!
The problem: Sketch a narrow parabola tha spills water and has a turning point of (0, -4). Will this parabola have real or complex roots?
I can't even figure out where to start. Any help will really be appreciated. Thank you for your time. Shirley
Click here to see answer by stanbon(26297)

Question 118501This question is from textbook
: The coordinates of the focus and equation of the directrix of a parabola are given. Write an equation for each parabola. Then draw the graph
35. (-3, -2);y=-6This question is from textbook

Click here to see answer by Edwin McCravy(2922)

Question 119039This question is from textbook ALGEBRA 2
: I HAVE A QUESTION ON ((( X^2+6X+8=0 )))This question is from textbook ALGEBRA 2

Click here to see answer by jim_thompson5910(13794)

Question 119050: I HAVE A QUESTION ON SOLVING BY FACTORING((( X^2+6X+8=0 )))
Click here to see answer by jim_thompson5910(13794)

Question 119845This question is from textbook Algebra 2
: How would i find the zero's of this problem. So pretty much how do i solve this problem? (Without Graphing)
I really have no idea where to even start.

(Up arrow represents exponent)
a^5+6a^4+5a^3=0
This question is from textbook Algebra 2

Click here to see answer by jim_thompson5910(13794)

Question 119846This question is from textbook Algebra 2
: I tried graphing this and i got only one curve. Since the first exponent is 4 I assumed that there should be four curves. I used an X/Y chart to graph and checked my answers multiple times. What am i doing wrong? Please help me.
This question is from textbook Algebra 2

Click here to see answer by jim_thompson5910(13794)

Question 119941: The orignal equation started like this:

Eventually i simplified it to this

So would my answer just be -3 and 3? What do i do with the since its unfactorable?
Click here to see answer by stanbon(26297)

Question 119346: I am having a very difficult time solving this equation for an ellipse if i could get some help i would really appreciate it:
4x^2+9y^2=1
thanks
Click here to see answer by stanbon(26297)

Question 120036: Find the center and the radius of the circle x2 – 6x + y2 – 4y + 4 = 0.

Click here to see answer by bucky(1732)

Question 119943This question is from textbook
: How would you solve this equation?
z=8*square root of z +240
Any help is appreciated thanks alot!This question is from textbook

Click here to see answer by ankor@dixie-net.com(6693)

Question 120103: How would I solve this quadratic equation?:

(I used decimal exponents because i have no idea how to write fractional exponents on a computer)
I have a very rough idea of where to start but am still having a lot of trouble, please help!
James

Click here to see answer by Earlsdon(4900)

Question 120480: Please hepl solve this problem, vertex (2, 1), ends of the latus rectum (-1, -5) and (-1,7).
(y-k)^2= -4c(x-h)
(y- 1)^2= -4*3(x- 2)
y^2-2y+1= 12(x-2)
Click here to see answer by Edwin McCravy(2922)

Question 120910: The endpoints of the major axis of an ellipse are (-4,-2) and (8,-2). The endpoints of the minor axis are (2,3) and (2,-7). Find the equation of this ellipse.
Click here to see answer by Edwin McCravy(2922)

Question 120926: Write an equation for a quadratic function whose graph has x-intercepts of 3 and 7, and f(5)=8
Click here to see answer by nabla(412)

Question 121084: Please help me solve this problem: f(t) = 2 t squared - 4t -1 find f(2) and then f(-1)
Click here to see answer by solver91311(5072)

Question 121084: Please help me solve this problem: f(t) = 2 t squared - 4t -1 find f(2) and then f(-1)
Click here to see answer by praseenakos@yahoo.com(417)

Question 121595: how do I graph 3y^2-x^2+12y+2x=5
Click here to see answer by stanbon(26297)

Question 121913: Name the vertex for the parabol with equation
y= 3x^2-12x+16
Click here to see answer by jim_thompson5910(13794)

Question 122072: #9
Identify x = 4sint
y = 5cost

a) circle
b) parabola
c) ellipse
d) hyperbola
e) none of these

Click here to see answer by jim_thompson5910(13794)

Question 122099: What is the radius and center of a circle with the equation x^2+y^2=100?
What is the radius and center of a circle with the equation (x-4)^2+y^2=25?
What is the radius and center of a circle with the equation (x+5)^2+(y-3)^2=18?
What is the radius and center of a circle with the equation x^2+y^2+4*x-2*y=4?
What is the radius and center of a circle with the equation x^2+y^2=2*x+10*y+25=0?

Click here to see answer by Fombitz(2113)

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