Help please will crown brainiest!! The temperature change in a chemistry experiment was –2o C very 30 min.
The initial temperature was 6o C. What was the temperature after 4 h?

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

Fast! find the length of cu. the triangles are similar. show your work.

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.