Marianne wants to study the chemical properties of iron. How could she do this?

What is the solution to the system of the equations? x = y - 3 x + 3y = 13

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?

Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll