You measure the lengths of three sides of a block and find a=12.23 mm, b=14.51 mm and c = 7.45 mm with an error of ±0.03 mm in each measurement. what is the uncertainty ∆v in the volume of the block?

Which expression gives you the distance between the points (5,1)and(9,-6)

The reflexive property of congruence lets you say that ∠pqr ≅

(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.