Asuitcase lock has a code 4 symbols long. the symbols on the lock are a star, a square, a circle, a triangle, a line, and a pentagon.

what is the probability that a randomly chosen code starts with a star followed by triangle and doesn't contain the same symbol twice?

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Pls! does anybody know a shortcut for answering these types of questions in the future?

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation