What is the value of x (2x+2)

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.