Draw a parallelogram with the shorter diagonal measuring 4 feet. The shorter diagonal divides the parallelogram into 2 congruent right triangles. The measure of the short edge of the parallelogram is x and the measure of the long edge of the parallelogram is 2x. The measure of the smallest angle of the right triangles is 4y-6 and the measure of the complementary angle of the triangles (which is also one of the vertex angles of the parallelogram) is 6y+6. What are the values of x and y? (Round any irrational values to the nearest hundredth.)

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".

d.) 48 units

step-by-step explanation: