The ratio between containers A and B equals to the ratio of heights of the containers. Find the volume of container A when the height of the container A is 0,5 m and the volume of the container B is 3000 liters and the height is 0,75 m.

In triangle abc segment de is parallel to the side ac . (the endpoints of segment de lie on the sides ab and bc respectively). find de, if ac=20cm, ab=17cm, and bd=11.9cm;

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.