What is the scale factor in the dilation?

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.