Multiply. write your answer as a fraction in simplest form. 5/4 x 3/10

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

20 points for the brainliest? drag each tile to the correct box. not all tiles will be used. arrange the steps to solve the equation . plz

Whoever gets this right gets the ! the half life of a soul smelling substance is 4 years. if you have 8 oz of this strange substance, how much of it will you have after 20 years? show work.