Karen takes a survey of the ages of people in the mall at 10 a. m. and at 6 p. m. on a saturday. karen wants to give a saturday presentation at the mall on rollerblading equipment and techniques. which statement best describes when karen should schedule her presentation and why? at 10 a. m., because there are more people at the mall at that time. at 10 a. m., because the average age of someone at the mall at that time is about 40. at 6 p. m., because the range of ages for this data set is less than the range of ages for the 10 a. m. data set. at 6 p. m., because the median age of the people at the mall at that time is 17, a teenage crow

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

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.

Maria heard on the radio that the high temperature that day would be to determine the temperature in degrees celsius, she used the formula , where c is the temperature in degrees celsius and f is the temperature in degrees fahrenheit.