Using properties of determinants, show that aabc is isosceles , if 1 1 + cos c = 0 1 + cos b 1 + cos a icos? a + cosa cos2b + cosb cos2c + cosci

The two-way frequency table below shows data on playing a sport and playing a musical instrument for students in a class.

Angela is buying a dress that is on sale for 20% off. if the original price of the dress is $40.00, how much money is angela saving on the dress? a. $0.80 b. $3.20 c. $32.00 d. $8.00

Scott’s bank account showed a balance of $750 on sunday. during the next five days, he made one deposit of $140 and numerous withdrawals of $180 each. let x represent the number of withdrawals that scott made. write an inequality that can be used to find the maximum number of withdrawals that scott could have made and maintain a balance of at least $100. do not use a dollar sign ($) in your response.