Hey does anyone know what 4/5 times 7/8 is ?- its for my math hw and its due in a hour thx!

Suppose investors can earn a return of 2% per 6 months on a treasury note with 6 months remaining until maturity. the face value of the t-bill is $10,000. what price would you expect a 6-month maturity treasury bill to sell for? (round your answer to 2 decimal places. omit the "$" sign in your response.)

I'll give brainliest if you answer right : )

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .