Aswimmer is drowning at b, a distance a/2=10 away from the beach. a lifeguard patrolling along the very edge of the beach spots the swimmer at point a which is a distance a=20m away from the point on the beach that is closest to the drowning swimmer. the average speed of a lifeguard running along the beach is v = 8 metres per second and her average swimming speed is v=v/3

the lifeguard runs along the beach at point c before she starts swimming find the quickest time t in which the life guard can reach the drowning swimmer.

This is so hard and it’s for a test

Rob filled 5 fewer plastic boxes with football cards than basketball cards. he filled 11 boxes with basketball cards.

(50 ) mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.