Elliot wants to compare the density of four objects to the density of water. Elliot knows that if an object sinks in water, it h
as a higher density than water and that if an object floats in water, it has a lower density than water. Which of the following is a scientific investigation that Elliot could conduct to test the densities of the objects?
A.
Elliot could put the four objects in water to see if they sink or float.
B.
Elliot could look up the densities of the objects in a textbook.
C.
Elliot could ask his teacher which object has the greatest density.
D.
Elliot could put the objects in water to see how much water they absorb.
The answer is 4 let's make a equation to answer it 3*y=12 we need to get y simply multiply 1*3=3 2*3=66 is half way so we can double 2 to 4 4*3=12 so y=4. you only need 4 boards to complete the wall.
