Tutors Answer Your Questions about Quadratic-relations-and-conic-sections (FREE)
Question 549417: For the following equation, give the x-intercepts and the coordinates of the vertex.
y=x^2-6x-1
The chart needs to be filled out like this:
x-intercept (x,y)= (_____, _____) (smaller x-value)
x-intercept (x,y)= (_____, _____) (larger x-value)
vertex (x,y)= (_____, _____)
I cannot figure out how to fill out this chart please help me
Click here to see answer by scott8148(6628)   |
Question 550077: Please provide me with a couple of formulas to rearange:
P= (sqrt of (perihelion / (1-e))cubed)) so that I can determine
a: eccentricity
b: perihelion
I thought that I'd found out how to rearange it for perihelion, but when various values were plugged in, the results were incorrect. I'm sure that all that I missed was an operation overlooked.
Click here to see answer by Alan3354(69443)  |
Question 550078: Question 550077: Please provide me with a couple of formulas to rearange:
P= (sqrt of (perihelion / (1-e))cubed)) so that I can determine
a: eccentricity
b: perihelion
I thought that I'd found out how to rearange it for perihelion, but when various values were plugged in, the results were incorrect. I'm sure that all that I missed was an operation overlooked.
The [ P ]value is "period"
Click here to see answer by stanbon(75887) |
Question 550205: Question 1
The foci are at (+-2,0)and the ellipse passes through (2,-3)
Question 2
The ellipse passes through points (6,4) and (-8,3)
Question 3
Find the equation of the circle which has its centre at point (2,3) and passes through the origin
Question 4
The centre of a circle lies on line y=2x-2, and this circle cuts the x-axis at points (1,0)and (3,0). Find the equation of the circle.
For question 3
This is what I've done:
(h,k)=(2,3)
(x-2)^2+(y-3)^2=r^2
(0-2)^2+(0-3)^2=r^2
4+9+r^2
r^2=13
R=√13
Please provide for me the full working as it is easy for me to understand, Thanks
Click here to see answer by Alan3354(69443) |
Question 552371: What is the axis of symmetry of y=7(x+1)(x-3) I have tried another website and it stated something about h=x, and h would be the 1 in the first set of parenthesis, correct? Or is there some other method that is more accurate? Thank you.
Click here to see answer by Theo(13342)  |
Question 553079: Use a graphing calculator, graph the pair of functions y=square root 49-(x-2)^2 and - square root -(x-2)^2
a. identify the conic section represented by the graph
b. write its equation in standard
And the multiple choice is
a. circle;(x+2)^2+y^2=49
b. circle;(x-2)^2+y^2=49
c. ellipse;(x-2)^2/(4)+(y^2)/(49)=1
d. ellipse;(x-2)^2(49)+(y^2)/(4)=1
Click here to see answer by stanbon(75887) |
Question 551776: An object is fired upward from the top of a tower at the velocity of 80 feet per second. the tower is 200 feet high. the height of the object above the ground t seconds after firing is given by the formula h(t)=-16t^2 +80t+200.
a) What is the maximum height reached by the object?
b) How long after firing does it reach maximum height?
Click here to see answer by lwsshak3(11628) |
Question 552985: I'm having a difficulty in solving this problem,your help is highly appreciated:
The elliptical orbit of Mars has its foci at (0.141732, 0) and
(-0.141732, 0), where 1 unit equals 1 AU. The length of the major axis is
3.048 AU. Determine the equation that models Mars elliptical orbit
Click here to see answer by lwsshak3(11628) |
Question 551770: a ball is thrown upward into the air with an intitial velocity of 64 feet per second.the formula h(t)= 64t-16t^2 gives it height above the ground after t seconds.
a) what is the height after 1.5 seconds?
b) what is the maximum height?
c) how many seconds will pass before it returns to the ground?
Click here to see answer by lwsshak3(11628) |
Question 546624: This is about parabola's.
I know the fomula to find the vertex is y=aX^2+bx+c
But I dont understand the process of working the problem out.
The equation is y=(x-2)^2+3
(I dont have the raised to 2nd power key so I put ^2 hope its not a problem)
Click here to see answer by lwsshak3(11628) |
Question 553796: When finding a solution of system of equations, for a conic intersection, how do you know what to do when there is a question like  and x + y = 2? I understand that on the second equation I need to get it to where y = -x - 2, but I dont understand how to plug it into the first equations to find the point.
Click here to see answer by lwsshak3(11628) |
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