Hayden wants to know if the residents in his town are interested in having a recreation center built. Which sample would allow Hayden to make a valid conclusion? A.
asking the children living in town

B.
asking the people living on his street

C.
asking 50 randomly chosen people living in the town

D.
asking a random group of 50 parents at a school meeting in town

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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".

the square root of what number? if you add that, then someone will probably answer the question.

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step-by-step explanation: