Abirthday is divided into 12 equal parts. andrew eats 3/12 of the cake and timothy eats 1/12
what fraction of the cake is left?
how many pieces of cake are left
could someone explain to me the answer

On a piece of paper graph f(x)=5•(0.4)^x

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?