Fiona is drawing polygons on a computer. she wants to map a regular 9-sided polygon back onto itself using a reflection. which set of lines can fiona choose from for her line of reflection?

Which statement justifies why angle ebc measures 90?

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 (%)

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin. how many doctors use brand x aspirin