A student has a sample of small metal wires. Determining the density of a large number of randomly shaped objects using geometry is difficult. No one wants to measure 1000 different pieces of wire individually to determine their length and radius. Instead we use a method called displacement. A graduated cylinder containing 20.0 mL of water has an easy to determine volume. If we add the metal wires to the graduated cylinder the water level will rise. The volume of the water the metal wires is also something easy to record, for example 42.5 mL. What is the volume of the sample of metal wires

(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.

Which of the following statements is a true conclusion that can be made from the scaled bargraph?

Which is the value of this expression when p=3 and q=-9