Seventh grade
g.16 add, subtract, multiply, and divide fractions and mixed numbers: word problems krz
stand
every day, the monroe pet store uses 2 bags of dog food to feed the dogs. for how many
days will 1/3 of a bag of dog food last?

1/3 of a bag of dog food last will last for

Step-by-step explanation:

Given:

Number of  dog bag food used per day by Monroe Pet Store to feed the dog= 2

To find:

Number of days  1/3 of a bag of dog food last=?

Solution:

Let the number days for which the of bag of food lasts be x

For one day= 2 bags

for x days =

By cross multiplication method

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".

idk

step-by-step explanation: