Simplify using suitable property
8/9+4/7+6/45+9/14​

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?