A is the correct answer.
This is because if you multiply 0.25 by 4, that would equal 1. Now, multiply 12 by 4 as well and you'll get 48. So the scale is 1:48.
Essa pergunta nao esta em forma ingles, então pessoas nao vao entender.
I assume that by square corners you mean 90 degree angles. if this is the case then there are 2 in a pentagon. Hope I helped :)
Well you can combine like terms. 3x-5=1/4x and that's as far as I got hope this helps. sorry I didn't get all the way through