anonymous
  • anonymous
Could someone help me with a few questions?
Mathematics
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anonymous
  • anonymous
Could someone help me with a few questions?
Mathematics
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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anonymous
  • anonymous
They're geometry, and it's over dilation.
horsegirl27
  • horsegirl27
I know a little geometry, so I'll see if I can. If not, I'll tag some users to help. (also just one question per post please) :)
anonymous
  • anonymous
Alright. First one. In ΔABC, ∠ ABC is a right angle included between AB¯¯¯¯¯ = 3 units and BC¯¯¯¯¯ = 2 units. ΔABC is dilated by a scale factor of 0.5 with point B as the center of dilation, resulting in the image ΔA′B′C′. Which statement about A'B¯¯¯¯¯¯ is true? A) A'B¯¯¯¯¯¯ is 1.5 units long and lies on the same line as AB¯¯¯¯¯. B) A'B¯¯¯¯¯¯ is 3 units long and lies on the same line as AB¯¯¯¯¯. C) A'B¯¯¯¯¯¯ is 1.5 units long but lies on a different line than AB¯¯¯¯¯. D) A'B¯¯¯¯¯¯ is 3 units long but lies on a different line than AB¯¯¯¯¯.

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horsegirl27
  • horsegirl27
So I'm not too sure, but I think it will be A or C. @mathmate do you know?
horsegirl27
  • horsegirl27
dan815
  • dan815
You can't just give out answers
anonymous
  • anonymous
I don't entirely understand...
dan815
  • dan815
|dw:1434729674449:dw|
dan815
  • dan815
center is the center of dialation
dan815
  • dan815
and all the sides have been halved as you multiplied by 0.5
anonymous
  • anonymous
Okay.
dan815
  • dan815
B* is the center of dialation
anonymous
  • anonymous
Alright.
dan815
  • dan815
so what do u think the answer is
anonymous
  • anonymous
I really don't know. Geometry is my worst subject.
anonymous
  • anonymous
Is it A?
dan815
  • dan815
yeah
anonymous
  • anonymous
I have more, if you're okay with helping out.
anonymous
  • anonymous
Polygon XYZW is dilated by a scale factor of 2 with point T as the center of dilation, resulting in the image X′Y′Z′W′. If point T lies on YZ¯¯¯¯¯, what can be said about Y'Z'¯¯¯¯¯¯¯ ? A) Y'Z'¯¯¯¯¯¯¯ passes through point T but has a different slope than YZ¯¯¯¯¯. B) Y'Z'¯¯¯¯¯¯¯ passes through point T and has the same slope as YZ¯¯¯¯¯ . C) Y'Z'¯¯¯¯¯¯¯ does not pass through point T but has the same slope as YZ¯¯¯¯¯. D) Y'Z'¯¯¯¯¯¯¯ does not pass through point T and has a different slope than YZ¯¯¯¯¯.
dan815
  • dan815
|dw:1434730481115:dw|
dan815
  • dan815
lets say T is some arbitrary point on that line YZ, now we dilate this figure by a factor of 2 about that point, what will that looks like
anonymous
  • anonymous
.. B? I am terrible at this stuff.
dan815
  • dan815
|dw:1434730837347:dw|
dan815
  • dan815
you are right, i think
anonymous
  • anonymous
Alright, next then. JK¯¯¯¯¯ is dilated by a scale factor of n with the origin as the center of dilation, resulting in the image J'K'¯¯¯¯¯¯¯. The slope of JK¯¯¯¯¯ is m. If the length of JK¯¯¯¯¯ is l, what is the length of J'K'¯¯¯¯¯¯¯? A) m × n × l B) (m + n) × l C) m × l D) n × l

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