British scientists found fragments of single-celled algae called diatoms in the Earth's atmosphere at heights of around 16 miles. They conclude that these pieces of life must have come from an "extraterrestrial" source (in other words, another planet). Which of the 3-part claim analysis "formula" needs to be satisfied before this claim can be validated?

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".

can you put the picture up?

step-by-step explanation:

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.