Select the postulate that states polnts A and Blie in only one line. O Postulate 1: A line contains at least two points.
O Postulate la: A plane contains at least three points not all on one line.
O Postulate 1b: Space contains at least four points not all on one plane.
O Postulate 2: Through any two different points, exactly one line exists.
O Postulate 3: Through any three points that are not one line, exactly one plane exists.
O Postulate 4: If two points lle In a plane, the line containing them lles In that plane.
O Postulate 5: If two planes Intersect, then their intersection is a line.

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".

if x = 1, then the answer is 3.5