cuanto es (2a + 3b + c) + (5b + 8c + a) ??? cuanto es o como se resuelven estas operaciones lo necesito por que no entiendo

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

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'