Question about Casio FX-115ES Scientific Calculator
Assuming the question is what is the circle equation?
and if (-2,2) is the center of the circle
the equation should look like this: (x+2)^2+(Y-2)^2=R^2
And now only R is needed.
given 2x-5y+4=0 equation of line perpendicular
we can rearange the equation to be y=(2x+4)/5
from that we can see that the slope of the line is 2/5
And from the fact of perpendicular line we can say that the slope
of the radius line is -2/5.
The motivation now is to calculate the distance between the center of the circle to the cross point of the radius with the line perpendicular
For that we would calculate the radius line equation and compare it to the equation of line perpendicular
As mentioned earlier the slope of the radious line is -2/5.
So the equation is y=-2/5x+b and b can be calculated by using the center of the circle coordinates
2= - (2/5)*(-2)+b ------> b=2-4/5=1.2
radius equation is y=-(2/5)x+1.2
Now the cross point is calculated by comparing the equations:
-(2/5)x+1.2=(2x+4)/5 --> -2x+6=2x+4 --> 4x=2 --> x=1/2 --> y=1
So the cross point is (1/2,1).
The distance between the points is calculated by the following
Therefore the circle eq is (x+2)^2+(Y-2)^2=7.25
Posted on Dec 15, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Apr 03, 2016 | Office Equipment & Supplies
Dec 12, 2014 | Bagatrix Algebra Solved! 2005 (105101) for...
Jan 28, 2014 | Computers & Internet
Feb 03, 2012 | Office Equipment & Supplies
Dec 04, 2011 | Super Tutor Pre Algebra (ESDPALG)
Aug 27, 2011 | Texas Instruments TI-84 Plus Calculator
Nov 04, 2009 | Texas Instruments TI-84 Plus Silver...
336 people viewed this question
Usually answered in minutes!