Maria baked bran and oatmeal muffins for the class. The recipe for bran muffins calls for 5kg of butter and 2kg of flour, and 2kg of butter and 3kg of flour to make the oatmeal muffins. Altogether she used 18kg of butter and 16kg of flour. How many batches of each type of muffin did she bake?

maria is drunk

Step-by-step explanation:

y

no

step-by-step explanation:

2-7=-5

7-2=5

when you combing like terms for ech expression, 5 and -5. these numbers are not equal to each other.

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".