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Tutors Answer Your Questions about Quadratic-relations-and-conic-sections (FREE)
Question 139710: Please help me with this problem. I have asked for hrlp before but could not find the answer to it. Thank you for your help. This problem is from a homework sheet.
Write the series in summation notation. Use the index i and let i begin at 1 in each summation.
3.) 9 + 14 + 19 + 24 + 29
Click here to see answer by stanbon(57967)  |
Question 139709: Please help me with this problem. I have asked for hrlp before but could not find the answer to it. Thank you for your help. This problem is from a homework sheet.
Write the series in summation notation. Use the index i and let i begin at 1 in each summation.
3.) 9 + 14 + 19 + 24 + 29
Click here to see answer by scott8148(6628)  |
Question 139741: Please help with problem. It comes from a homework sheet. Thank you.
Find the vertex of the parabola and determine whether the parabola opens upward, downward, to the left, or to the right.
15.) y = -(x+2)2 to the second power + 2
Click here to see answer by solver91311(17077)  |
Question 139712: I am working on a math homework sheet. I am having trouble with some problems. Can someone please help me figure these out.
Find the equation of the parabola by the given information.
13.) Vertex at the origin, focus at (0,3).
Click here to see answer by scott8148(6628) |
Question 140845: Consider the following graph of y = f(x). NOTE: P is 1 on the x-axis
a)If h(x) = f(x) + 2, what would the new coordinates of P be after the shift? Give answer in (x, y) form.
b)If k(x) = f(-x), what would the new coordinates of P be after the reflection? Give answer in (x, y) form.
Click here to see answer by stanbon(57967) |
Question 141095: I need to Identify the conic section, then place in standard form. The equation is: 4x^2+y^2+8x-4y-28=0
This is as far as i have been able to solve it.
(4x^2+8x)+(y^2-4y)=28
[4(x+1)^2-1]+(y-2)^2-4=28
+4 +4
4(x+1)^2+(y-2)^2-1=32
+1 +1
4(x+1)^2/33+(y-4)^2/33=1
any help you can give would be wonderful. Thank you.
Click here to see answer by rapaljer(4667)  |
Question 141477: What is the converse of the following statement?
"If a diameter of a circle intersects a chord of the circle at right angles, then it bisects the chord."
a) If a diameter bisects a chord of the circle, then it intersects the chord at right angles.
b) If a diameter of a circle intersects a chord of the circle, then it does not intersect the chord at right angles.
c) If a diameter of a circle does not bisect a chord of the circle, then it does not intersect the chord at right angles.
d) All diameters of a circle bisect chords at right angles.
Click here to see answer by stanbon(57967) |
Question 143184: Obtain an equation for an ellipse with major axis of lenghth 12 and foci at (-2, 5) and (-6, 5).
um i've tried solving it and at best, i've gotten the start with:
(x+4)^2 + (y-5)^2
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36 22 (?)
and there is no multiple choice answer with
36y^2,
for the y^2, the choices are......
52y^2
8y^2
9y^2
please help me soon ! :)
i need this ready by tomorrow afternoonish thank you.
Click here to see answer by scott8148(6628) |
Question 144037: hello i am in 10th grade right now
and we are learing about conics
there are few problems that i do not understand
and i would really appreciate it if you could send me e-mail as soon as possible
i have a quiz this week
thank you so much!! i really appreciate it
here's the problem
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focus at (-3,4); directrix the line y=2
given this information, how do you find:
vertex (h,k) =
a (distance between focus and vertex) =
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i know that the parabola is going to open up and the formula for the
directrix line is y= k-a
and y= 2 , so that means k-a=2, but i do not know the vertex
and the value of a...
thank you for your HELP!
Click here to see answer by stanbon(57967) |
Question 144041: hello again
i have another problem
this time, i have a question on "elipse"
and here is the problem
==========================================================
4x^2+9y^2-16x-18y=11
this is the expanded equation, so how do i find the STANDARD form of
this equation?? and how do i find the coordinates of 4 VERTICES???
including major and minor axis???
=============================================================
please tell me all the steps and i would appreciate it very MUCH!!!!!
thank you so much again
i have a quiz and i go this problem wrong
please tell me soon as possible
and have a great day ! THANK YOU!
Click here to see answer by stanbon(57967) |
Question 144056: hello
im in high school righ now, learning about conics
and i have a question on how to find an equaion of a circle if:
======================================
circle with center at (-5,1) and radius 6
also what it he line(s) of symmetry?
========================================
thank you so much
and i will appreciate very much if you could
respond soon as possible
i have a quiz tomorrow
thank you !!!
Click here to see answer by jim_thompson5910(28715) |
Question 144052: hello
i have another question
sorry .. and thank your for your time
i'll get straight to the point
========================================================
find the center, foci, and vertices of the following elipse
[(x-3)^2]/4 + [(y+1)^2]/9 = 1
==================================================
thank you for your kindness
and your time as well
i appreciate it
i'll be looking forward to your answer
Click here to see answer by jim_thompson5910(28715) |
Question 144212: hi
im a student who is struggling with conics
therefore i'll appreciate it if you could help me
i do not understand why this equation below is a "hyperbola" ... ?
my teacher said that it was a hyperbola and i still don't get it
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9xy = 4
i found that the standard form was y= 4/9x but why is this an hyperbola?
doesn't both x and y have to be squared??
and can you please tell me how to graph it??
i also learned that it has both horizontal and vertical asymptotes
---------------------------------------------------------------
thank you so much for your help!
i'll be waiting
Click here to see answer by stanbon(57967) |
Question 144338: hello
i have a question on the equation of an Ellipse
i have the equation of x^2-6x+y^2-12y+41=0
and i found out that the standard form was [(x-3)^2]/4+[(y-6)^2]/4 = 1
and i can't figure out if its horizontal or vertical
because the denominators are the same
is this an ellipse??
thank you for your help
i really appreciate it
i have a test
so please help me!
Click here to see answer by scott8148(6628) |
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