What is the correct method to label a line with point U and W on it

Tree diagram to find the prime factors of 18

What is the missing constant term in the perfect square that starts with x^2 -20x

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.