Mathematics, 23.01.2021 14:30 oliviakate9230

in an examination 80%students passed in physics 70% in chemistry while 15% failed in both the subjects. if 3250 students passed in both the subjects. find the total number of students who appeared in examanitaion

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Mathematics, 21.06.2019 16:30, skye2598

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Mathematics, 22.06.2019 00:00, christinavelez26

(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.

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in an examination 80%students passed in physics 70% in chemistry while 15% failed in both the subjec...