Alex scored 50% in his math test if the test was out of 30 what was his score?

My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.

Can someone me with these two circle theorem questions asap?

Agrasshopper weighs 0.89 grams. express the grasshopper’s weight in scientific notation.