The waiter places a bowl of soup in front of Abbey. In a counterclockwise direction, she passes the soup to Kai who then passes it to Haifa. Which two rotations about the center of the table describe passing the soup?

- mckenzieandjesus

- schrodinger

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- mckenzieandjesus

first 80° and then 120°
first 40° and then 60°
first 60° and then 90°
first 72° and then 108°

- mckenzieandjesus

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- mckenzieandjesus

please help!

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## More answers

- jim_thompson5910

How many people are at the table?

- mckenzieandjesus

13

- mckenzieandjesus

no 12

- jim_thompson5910

close, 14 actually

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- jim_thompson5910

oops my bad

- mckenzieandjesus

but u skipped numbers?

- jim_thompson5910

I jumped from 10 to 12 for some strange reason

- mckenzieandjesus

no 12

- jim_thompson5910

sorry I see where I added the extra number

- jim_thompson5910

ok yeah, 12

- mckenzieandjesus

ok lol

- jim_thompson5910

anyways, divide 360 degrees by 12
360/12 = 30

- jim_thompson5910

going from person to person means that you go 30 degrees along the outer arc

- jim_thompson5910

so going from Abbey to Kai means we go 2 spots
(2 spots)*(30 degrees per spot) = 60 degree rotation

- mckenzieandjesus

yeah but the next spot i over 180? if its 30 degree each spot

- jim_thompson5910

going from Kai to Haifa means we move 3 spots
(3 spots)*(30 degrees per spot) = 90 degree rotation

- mckenzieandjesus

its 2 spots and the 5 spots?

- mckenzieandjesus

ohh i see lol

- jim_thompson5910

yeah it's starting from Kai on the second part (and not Abbey)

- mckenzieandjesus

Okay do u know this one?
Every _____ tessellates.
pentagon
octagon
triangle
decagon

- jim_thompson5910

the answer is given at the top of this page
http://gabrielattar.weebly.com/uploads/4/3/2/2/43226303/12.6_tessaletions_notes_.pdf
where it says "Theorem 12-6"

- mckenzieandjesus

yay i got it right then

- jim_thompson5910

congrats on getting it right

- mckenzieandjesus

A taxicab starts at (1, -2) on the grid and picks up a passenger. The taxicab travels a total of 16 blocks, and then drops the passenger off. Which composition of two translations could describe the taxicab’s final position?
(x, y) > (x + 4, y - 3), and then (x, y) >(x - 9, y + 1).
(x, y) > (x - 4, y + 3), and then (x, y) > (x + 6, y - 1).
(x, y) > (x - 3, y + 4), and then (x, y) > (x + 8, y - 1). My answer
(x, y) > (x - 3, y + 4), and then (x, y) > (x + 7, y - 1).

- mckenzieandjesus

Thanks (:

- mckenzieandjesus

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- jim_thompson5910

good, choice C is the only one where the total distance traveled is 16 blocks

- mckenzieandjesus

So im right!?

- jim_thompson5910

yep

- mckenzieandjesus

Yes! (:

- jim_thompson5910

Nice job

- mckenzieandjesus

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- mckenzieandjesus

In the diagram, triangle ECD is a _____ of triangle ABC across line p.

- mckenzieandjesus

translation
glide reflection
rotation
reflection (my guess)

- jim_thompson5910

let me think

- mckenzieandjesus

ok

- jim_thompson5910

this is what I get when I reflect ABC over line p

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- jim_thompson5910

the reflection does not line up with ECD
so reflection doesn't work
I couldn't get glide reflection to work either

- jim_thompson5910

translation doesn't work either
the only thing left is rotation. The only issue is that I'm not sure how they're rotating it. This problem is just odd

- jim_thompson5910

if line p were along BC, then a glide reflection would work
but that's not the case since line p is through EC

- mckenzieandjesus

hmm

- jim_thompson5910

I think the authors messed up

- mckenzieandjesus

All i can guess is relfection

- mckenzieandjesus

A blueprint for a fence has a scale of 1:40. The fence in the blueprint is 6 in. What is the length of the actual fence?
20 feet
240 feet (or this one)
20 inches (my answer)
72 feet

- mckenzieandjesus

- jim_thompson5910

"has a scale of 1:40" means that you multiply the smaller dimension (6 inches) by 40 to get the corresponding longer dimension
then convert to feet

- mckenzieandjesus

Yeah.
6*40=240
240/12 = 20
right?

- jim_thompson5910

looks good

- mckenzieandjesus

ok

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