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#1 Re: Help Me ! » Triangle Math Help » 2015-04-03 04:35:35
It's okay, it was from a previous lesson and I got a 9 out of 10 score on it, haha. I still have an A in the class so I think I'll live if I don't correct them to get a 10, thank you though!
#2 Re: Help Me ! » Triangle Math Help » 2015-04-03 04:33:21
If you could also help me with the general proofing questions, that would be awesome!
14. If a central angle is 30 degrees, then the arc it defines is also 30 degrees.
A Given
B Definition of an inscribed angle
C Unfounded
D Properties of a central angle
E Properties of an arc
F Definition of radius
I chose E (incorrect)
15. The area of a sphere is 4 times the area of a circle with the same radius.
A Given
B Definition of a radius
C Definition of a circle
D Definition of a sphere
E Formula for area of a sphere
F unfounded
I chose D (incorrect)
18. If I have two points, (-2, -3) and (-4, 4) then the distance between them is sqrt(53).
A Distance Formula
B Definition of a point
C Definition of a distance
D Definition of a line
E Definition of coordinates
F Definition of radius
I chose C (incorrect)
#3 Re: Help Me ! » Triangle Math Help » 2015-04-03 04:30:02
I'll choose D and see what happens 
And yes, it is Compuhigh 
#4 Re: Help Me ! » Triangle Math Help » 2015-04-03 04:22:02
For number 8 I think the correct answer is D because we don't have any measure of B or A so we don't know if they're both 45 degrees or different numbers. Right?
#5 Re: Help Me ! » Triangle Math Help » 2015-04-03 04:19:57
So for question 12, the answer is C? The square and the polygon both have the exact sum of exterior angles.
As to question 8..that would be because I uploaded the wrong picture!
Here is the correct one.
#6 Re: Help Me ! » Triangle Math Help » 2015-04-03 04:12:25
Yes, I just figured that out! I've correct 4/6 of them so far. All of them were wrong because I jumped the gun and didn't completely read the question..oops!
I just have two more I cannot figure out.
#7 Re: Help Me ! » Triangle Math Help » 2015-04-03 04:01:30
I chose C but that was incorrect.
I chose D but that was incorrect.
Please tell me the correct answer and how to do it and why its the answer! Thank you!
#8 Re: Help Me ! » Triangle Math Help » 2015-04-03 03:52:56
So for the second question, the answer would be C: 144 - 6√ 3
And the first question the answer is 12
#9 Re: Help Me ! » Triangle Math Help » 2015-04-03 03:48:42
Hi again,
In the first one triangle KPN is 'similar' to KJQ. That's because of the parallels.
That means that a constant scale factor will enlarge KPN to make KJQ.
You know 8 enlarges to 14, so the scale factor is 14/8
Apply the same to KN to get KQ
KQ = 16 times 14/8
Now subtract 16 to get NQ.
While you're trying that I'll look at the second one.
Bob
So the answer IS 12?
#10 Re: Help Me ! » Triangle Math Help » 2015-04-03 03:41:47
hi
If you stay on-line, I'll prepare a reply for you.
Bob
Sure, that's okay Thank you.
#11 Help Me ! » Triangle Math Help » 2015-04-03 03:11:13
- Nickiekinz
- Replies: 21
Hi, I need help solving these two problems. I've been stuck on them for quite some time.
I guessed on that one, but I figured it wouldn't hurt to get actual help.
What I've figured out from this one is:
Area of square: 144
Hypotenuse of triangle: 12
Please correct me if I'm wrong, thank you!
#12 Introductions » Hi! » 2015-04-03 02:02:52
- Nickiekinz
- Replies: 4
Hello, my name is Nicole. I've been lurking on this forum since last april, but I never made an account til yesterday because I couldn't find the answers I needed.
I absolutely LOVE math and I hope to major in it once I go to college!
I'm good with computers, most math topics, I play piano and sing and draw..among other things.
I look forward to meeting and talking with you all about math!
#13 Re: Help Me ! » The Cartesian Coordinate System and the Distance Formula » 2015-04-02 05:12:07
Nevermind, read wrong haha. Thank you!
I might have questions on my next lesson, do I post here or make a new topic?
#14 Re: Help Me ! » The Cartesian Coordinate System and the Distance Formula » 2015-04-02 05:11:05
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)
#15 Re: Help Me ! » The Cartesian Coordinate System and the Distance Formula » 2015-04-02 05:04:53
Thank you 
I'll go ahead and solve these, and come back when I'm done so you could check them
#16 Re: Help Me ! » The Cartesian Coordinate System and the Distance Formula » 2015-04-02 04:58:14
8? I think
#17 Re: Help Me ! » The Cartesian Coordinate System and the Distance Formula » 2015-04-02 04:54:19
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
#18 Re: Help Me ! » The Cartesian Coordinate System and the Distance Formula » 2015-04-02 04:50:14
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
#19 Re: Help Me ! » The Cartesian Coordinate System and the Distance Formula » 2015-04-02 04:47:00
No clue
#20 Re: Help Me ! » The Cartesian Coordinate System and the Distance Formula » 2015-04-02 04:45:19
Nope, that's the answer I had originally.
The answers for that particular question are:
A: 4
B: sqrt(61)
C: sqrt(290)
D: 4[sqrt(13)]
E: 5[sqrt(17)]
F: 3[sqrt(180)]
#21 Re: Help Me ! » The Cartesian Coordinate System and the Distance Formula » 2015-04-02 04:42:16
14.4222051019
#22 Re: Help Me ! » The Cartesian Coordinate System and the Distance Formula » 2015-04-02 04:40:21
now you do
√208
#23 Re: Help Me ! » The Cartesian Coordinate System and the Distance Formula » 2015-04-02 04:39:04
144 + 64 = 208
#24 Re: Help Me ! » The Cartesian Coordinate System and the Distance Formula » 2015-04-02 04:36:27
(-8)^2
So that would be 64