10.1-10.2+due+12-2

18 & 20 work by Morgan Miller

I got the same answer for number 18. Checked by Sam Bennack.

I hope this is the one I am supposed to check, and I got the same answers. Fred Jordan

I was supposed to check this one and I got the same answers. Jose Castellanos

Done by: Leslie Baker Good Job! I got the same thing! Checked by:Valeria Chelala
 * 1) 24 (10-1)

28.(10-1) Some of my work got cut off but my answer was isoceles. Done by Rachel West

I got the same thing!! Yay! Checked by Mady Smith

(10.1) #30, 32 40 Done by Amy Finkelstein

Okay, I'm posting it again because it got deleted. It has been there since yesterday, though.-Amy I got the same thing! Checked by Alyssa Johnson

(10.2)

36) a=(-2, 7, 4),b= (-4, 8, 1),c= (0, 6, 7) ab= <-2, 1, -3>  ac= <2, -1, 3>  -2(-1)=2 1(-1)=-1 -3(-1)=3 <-- multiples  it's parallel so it is collinear  38) a=(0, 4, 4), b=(-1, 5, 6), c=(-2, 6, 7) ab= <-1, 1, 2> ac= <-2, 2, 3> -1(2)=-2 1(2)=2 2(1.5)=3 it's not parallel so it is not collinear I agree with Emma, I got the same result! 36&38 checked by Kelsey Harmon
 * 1) 36/38 done by: Emma McRae

done Parker Tennet Got the same thing as Parker. Will Duffy

46.

center = (3,-2,0) radius=2 Done by: Blake Schreiber

I got the same answers, but I think you made a typo. It's supposed to be (y+2)^2.
 * 1) 46 checked by Miles Hennington

=__**10.2**__=
 * 4,8,10 (10.2)

Done by Emily Johnson I got the same answers, good job! :) Checked by Jan Dudek

12) v= <-2, 0, -5> magnitude=√4+0 +25 magnitude=√29

14) 2i-j+6k = <2, -1, 6> magnitude=√4+1+36 magnitude=√41

I got the exact same answer Checked by Andrew Kim
 * 1) 12-14 Done by Kamryn Richard

18) Done By: Courtney Venable

-Clarissa Rodriguez

28. Done by matt milan :^)-\-< i got the same answer. checked by ben jennette

30.

Work By: Frances Dannenbrink

I agree with your answer, and I solved the problem the same way! Checked by: Abby Demiano

32. <-1,3,-1> * <2,-1,5> (-1*2)+(-1*3)+(5*-1)=-10 since there is no factor that can make the two equal each other and the dot product does not equal 0, it is neither parallel or orthogonal 34. u=-i+1/2j-k v=8i-4j+8k <-1, 1/2, -1> and <8, -4, 8> -8u=v, therefore the two vectors are parallel Done by Alex Dubois (work got deleted earlier so i just reposted) I copied it again from the history, 2nd time its been deleted

I got the exact same answers! good job Checked by Jennifer Hassell

40 & 42. I put these up earlier but someone deleted them Sorry it's kind of blurry... Done by Ellen Barth I got the same answers! checked by Kristen Hanslik Worked By: Alyssa Sturgis sorry its really big!

46) done by Peter Radecki Same answers!@! Checked by Jonathan Eichelberger