Write 7,500,000,000 in scientific notation.

Which of the following are parts of a sphere

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.