Nicole randomly selects a red card from a standard deck of cards. what outcome is the complement of drawing a red card

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

You invested $5000 between two accounts paying 4% and 9% annual interest, respectively. if the total interest earned for theyear was $350, how much was invested at each rate? $was invested at 4% andwas invested at 9%.

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 (%)