CAN SOMEONE PLEASE HELP ME I DONT UNDERSTAND THIS. And please HURRY 14. You have a 16g crystal that you need to find the volume of by dropping it into a beaker of water. The beaker
began with 20 mL of water and after the crystal was dropped in, the water was displaced to 31 ml What is the
volume of the crystal?
a. What is the volume of the crystal
b. What is the mass of the crystal
c. What is the label for density of this crystal
15.Explain the law of conservation of matter

0.5161290322580645 rounded to the neareth hundreth i do beleave

Step-by-step explanation:

man its nopq i just guessed and got it right so uhh

g00d lucc

step-by-step explanation:

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".