If a gum-ball machine contains 22 red gum balls, 46 yellow gum balls, 14 green gum balls, and 18 orange gum balls, what is the probability that a gum ball chosen at random will be green?
a: 23/50
b: 11/50
c: 7/50
d: 9/50

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

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.

What is 0.000008 meters in scientific notation