The dimension of rectangular compound wall of a house is 20 m long , 15m broad, 10 cm thick. Find the cost of building the walls by using bricks of size 20cm × 10cm × 5 cm where the rate of cost of bricks is Rs. 20000per 1000 bricks. 5days is required for 4 labours to finish the work and labour charge is Rs. 950 per day per labour.

Which answer is the solution set to the inequality |x|< 9? a. x< -9 or x> 9 b. x> -9 and x< 9 c. x> -9 or x< 9 d. x< 9 and x< 9

(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.

Asingle die is rolled twice. find the probability of rolling a 3 the first time and a 2 the second time