60% of the class was present today. If 12 students were present, how many total students are there in the class

Little’s law firm has just one lawyer. customers arrive randomly at an average rate of 6 per 8 hour workday. service times have a mean of 50 minutes and a standard deviation of 20 minutes. how long does a customer spend at little’s law firm on average?

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b