Five years ago Sara's aunt was four times as old as Sara. If Sara's aunt is 42 years older than Sara, how old is Sara now? Please help I have a deadline. Happy happy happy New Years everybody!

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

Suppose a pendulum is l meters long. the time, t,in seconds that it tales to swing back and forth once is given by t=2.01

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 (%)