If 1 pound = 0.454 kilograms, how many milligrams are in a pound?

Factor the monomial completely 42a3b3

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

If value of cos330° is √3/2 then find tan165°.