A student simplified the rational expression using the steps shown. (x^2/5•x^4/5/x2/5)1/2=(x^6/5/x^2/5) ^1/2=(x^3)^1/2=x^3/2. is the answer correct? Explain.

Amap has a scale of 3.5 inches = 20 kilometers. if the distance between two cities on the map is 4.9 inches, what is the actual distance between the two cities?

Q1 how many whole numbers less than 1000 can be written as a product of 3 consecutive whole numbers? a)10 b)11 c)15 d)21 q2 how many whole numbers between 5000 and 6000 consist of four different digits that decrease from left to right? a)3 b)10 c)69 d)120

Melody received $140 at the end of a certain week. how many customers did she advise that week?