Multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?

Sketch one cycle if the cosine function y=2cos2theta

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.