What is the scale factor for the set of similar figures?

Question

errinss · Answer

attachment

errinss · Answer

@jigglypuff314 @just_one_last_goodbye

jigglypuff314 · Answer

scale factor of a little turning into a big
is the big divided by small

so   8.4 divided by 4 = scale factor

errinss · Answer

2.1 would be the scale factor, correct?

jigglypuff314 · Answer

perfect :)

it's because we want to think - "Original times the scale factor equals the new one"
so 'what times the original equals new'

errinss · Answer

that makes sense lol, thank you again for the help

errinss · Answer

can you help me with one more?

jigglypuff314 · Answer

sure :)

errinss · Answer

Janet designed a star on her computer, and each side had a length of 40 mm. She reduced the figure by a scale factor of 0.65.
 
What were the side lengths of the reduced star?

errinss · Answer

there is no picture this one was hard for me thats why i saved it for the end

jigglypuff314 · Answer

"Original times the scale factor equals the new one"

so the original is 40mm
the scale factor is  0.65

errinss · Answer

26 mm would be the re-sized format of the star, right?

jigglypuff314 · Answer

exactly! great job ^_^

errinss · Answer

oh..... lol oops

jigglypuff314 · Answer

I'm glad I could help ^_^