If a building casts a 20 foot shadow when the angle of elevation to the roof is 72o, how tall is the building?

Find the third,fifth and seventh term sequence described by each rule a(n)=n+1

Which statement about the graph of y = 8(0.25)^2

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 (%)