When is it best to use the displacement method to determine the volume of a solid? select all that apply. when the solid has straight edges of a common shape when the solid dissolves in the liquid when the solid is insoluble in liquid when the solid has an irregular shape

The displacement method to determine the volume of a solid is bet to measure a solid when it is insoluble in liquid and has an irregular shape.

The method consists in filling a recipient with a known amount of water, lets say a measuring cup with one cup of water. Then, put the solid inside it, totally covered by the water; measure the new volume at the water line, subtract the starting volume from this new volume, and you will have the volume of the solid.

The answer is C. and D. when the solid is insoluble in liquid and when the solid has an irregular shape.

south, because if you took a map you would see texas is directly in the middle of east and west, but it is also downwards towards mexico, therefore it is south

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."