Question

Please check my answer
Triangle ABC has been dilated to form triangle AꞌBꞌCꞌ.What is the scale factor?

Answer 1

i think it is 2/5 once simplified

Answer 2

@igreen

Answer 3

@radar

Answer 4

@Kainui

Answer 5

@TheSmartOne

Answer 6

@ganeshie8

Answer 7

simply take the ratio of sides of image and preimage :
\[\large \dfrac{7.5}{3}\]

Answer 8

yes , I did and simplified I got 2/5

Answer 9

I did the 7.5/3...3/7.5...becomes 2/5

Answer 10

you did it in reverse

Answer 11

7.5/3 should be 5/2

Answer 12

\[\large \dfrac{7.5}{3} = \dfrac{75}{30} = \dfrac{5}{2}\]

Answer 13

I did it like this one...

Pre-image ABCD was dilated to produce image AꞌBꞌCꞌDꞌ.

What is the scale factor of the similar figures? Enter the answer in simplest form.




Two quadrilaterals labeled A B C D and A-prime, B-prime, C-prime, D-prime. Quadrilateral A B C D is larger than the other quadrilateral, which is to the right of quadrilateral A B C D. Side B C is labeled twelve, and side B-prime, C-prime is labeled nine.

Answer 14

it was explained to me that I needed to reverse the numerator and the denominator ....
now confused :{

Answer 15

just a convention
always put the "image" side on top

Answer 16

ok... so i need to go back and fix the other as well then or it will be incorrect?.

Answer 17

whats your answer for the other one with quadrilateral ?

Answer 18

simplified 3/4.... but that was doing the switching thing bc I originally had 4/3

Answer 19

3/4 is correct.

Answer 20

ok, but what is the reason I flip the one and not the other? I just want to make sure I understand it

Answer 21

no wait, in the first question, the bigger triangle is image, yes ?

Answer 22

let me reread it

Answer 23

it reads as if the ABC is the original and the other is the dilation

Answer 24

if it is image on top the the first would be 12/9 simplified to 4/3