A swimming pool is 50% filled with water. It measures 20m x 15m x 10m. A pump pours water into the pool at the speed of
5m3/min. It will take another minutes to fill the pool up.

3. solve the given inequality and graph the solution on a number line.

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.