Plz help asap
x + 10 = 20 and
y – 8 = 32
with step by step explanation plz

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species

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

Corresponding angles are a. always b. sometimes c. never congruent