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#26 2015-04-02 04:48:23
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: The Cartesian Coordinate System and the Distance Formula
For one thing you could have tried each answer in your calculator... Or you could have reduced
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#27 2015-04-02 04:50:14
- Nickiekinz
- Member
- Registered: 2015-04-02
- Posts: 31
Re: The Cartesian Coordinate System and the Distance Formula
OOOH, so all I have to do to solve those answers would be to enter
4 * sqrt13?
Then D would be the answer. Omg, I didn't know it was that simple haha
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#28 2015-04-02 04:53:33
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: The Cartesian Coordinate System and the Distance Formula
That is just one way to do it but it is better than no answer at all.
You could reduce
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#29 2015-04-02 04:54:19
- Nickiekinz
- Member
- Registered: 2015-04-02
- Posts: 31
Re: The Cartesian Coordinate System and the Distance Formula
What is the radius of a circle with the given center C that passes through the given point Z?
16. C (0, 0); Z (-8, 0)
A4
BSQRT(61)
C8
D5
E SQRT(173)
F SQRT(180)
17. C (-4, -5); Z (-10, -5)
A4
BSQRT(202)
CSQRT(290)
DSQRT(61)
E SQRT(173)
F 6
18. C (-5, 8); Z (-5, 4)
A4
BSQRT(61)
CSQRT(290)
DSQRT(202)
E SQRT(173)
F 6
19. C (-5, 9); Z (6, 0)
A4
BSQRT(61)
CSQRT(290)
DSQRT(202)
E SQRT(173)
F SQRT(180)
20. C (-7, 6); Z (-13, -6)
A4
BSQRT(202)
CSQRT(290)
DSQRT(61)
E SQRT(173)
F SQRT(180)
I need help with these now. Okay so, the formula for this would be: x^2 + y^2 = r^2? x is the x coordinate, y is y coordinate and r is the radius
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#30 2015-04-02 04:56:44
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: The Cartesian Coordinate System and the Distance Formula
For 16, what is the distance between those two points?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#31 2015-04-02 04:58:14
- Nickiekinz
- Member
- Registered: 2015-04-02
- Posts: 31
Re: The Cartesian Coordinate System and the Distance Formula
8? I think
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#32 2015-04-02 05:01:02
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: The Cartesian Coordinate System and the Distance Formula
That is correct, so that is the radius.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#33 2015-04-02 05:04:53
- Nickiekinz
- Member
- Registered: 2015-04-02
- Posts: 31
Re: The Cartesian Coordinate System and the Distance Formula
Thank you 
I'll go ahead and solve these, and come back when I'm done so you could check them
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#34 2015-04-02 05:06:50
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: The Cartesian Coordinate System and the Distance Formula
Okay, I will post the answers so you will have them.
15. (1, 2) and (5, 2) (E)
E 4
17. C (-4, -5); Z (-10, -5)
F 6
18. C (-5, 8); Z (-5, 4)
A 4
19. C (-5, 9); Z (6, 0)
D SQRT (202)
20. C (-7, 6); Z (-13, -6)
F SQRT (180)
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#35 2015-04-02 05:11:05
- Nickiekinz
- Member
- Registered: 2015-04-02
- Posts: 31
Re: The Cartesian Coordinate System and the Distance Formula
17. C (-4, -5); Z (-10, -5)
answer- 6
18. C (-5, 8); Z (-5, 4)
answer- 4
19. C (-5, 9); Z (6, 0)
answer- sqrt(202)
20. C (-7, 6); Z (-13, -6)
answer- sqrt(180)
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#36 2015-04-02 05:12:07
- Nickiekinz
- Member
- Registered: 2015-04-02
- Posts: 31
Re: The Cartesian Coordinate System and the Distance Formula
Nevermind, read wrong haha. Thank you!
I might have questions on my next lesson, do I post here or make a new topic?
Last edited by Nickiekinz (2015-04-02 05:12:57)
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#37 2015-04-02 10:05:19
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: The Cartesian Coordinate System and the Distance Formula
Hi;
Make a new topic and introduce yourself in Introductions too.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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