In the triangle ABC shown below, side AC is extended to point D with mZDAB = 180 - 3x, mZB = 6x - 40, and m2C = x + 20. What is the value
of x ? What is mZBAC ?

Can (2,3 and square root 10) be sides ona right triangle?

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?

(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.