Natasha is 5 years older than Maurice. If the sum of their ages is 19, how old is Natasha?

Natasha is 12 years ils and Maurice is 7 years old

Step-by-step explanation:

lets say that Maurice is 7 years old.

âgé of Natacha: +5 years ils than maurice

7+5=12

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".