Select all the expressions that have a greatest common factor (GCF) of 3xy^2 with 42xy^4.
A. 6x^2y^2
B. 15xy^2z
C. 27x^3y^2
D. 9xy^3
E. 21xy^2

Aregular pan has a length that is 4/3 the width. the total area of the pan is 432in.2. what is the width of the cake pan?

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122