Match these items. 1. all living and nonliving things in our world
water cycle
2. the study of the relationships of living things to their environment
producers
3. movement from oceans to air to earth
chemical cycle
4. oxygen and carbon dioxide are used and produced
consumers
5. movement of hydrogen, nitrogen, phosphorus, and sulfur
food chain
6. the complex level of organization within nature
ecology
7. the way energy and food move through the ecosystem
ecosystem
8. green plants like grass and trees
nature
9. someone or something that uses up or destroys things
carbon cycle
10. a tiny organism that eats the dead remains of former living things
decomposers
PLEASE HELP

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 equivalent expression are always the hardest ones but you look at the gcf also

step-by-step explanation:

(2,6)

step-by-step explanation:

cause i just did this and got the answer

you're welcome