Why is hauchecorne's surprise at his neighbors' reactions to his claims of innocence ironic?
a. hauchecorne knows that the wallet has been found and will soon be turned in.
b. hauchecorne knows his reputation and should not expect to be trusted.
c. hauchecorne knows that malandain is just trying to get even with him.
d. hauchecorne knows that malandain witnessed him pick up the string.

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".

it's d

step-by-step explanation: