Which equation can be used to find the value of b if side a measures 8.7cm?

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

What is the base of 1/9 to the power of 2

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.