My sister is half my age at 4 so how old is she when I am 100?

Find the value of the cosine for angle a

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

How can you construct perpendicular lines and prove theorems about perpendicular lines