ten individuals went on a low-fat diet for 12 weeks to lower their cholesterol. the data are recorded in the table below. do you think that their cholesterol levels were significantly lowered? conduct a hypothesis test at the 5% level.

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".

what's the question?

step-by-step explanation:

there is no question.

180-142=38 for the acute angle next to the entry

90+38=128

180-128=52

a=52

step-by-step explanation:

the answer would be  

a.

3: 1

step-by-step explanation: