The joint of meant needs to be cooked for 30 minutes per 500g plus an extra 20 minutes how long will it take to cook a joint of meat weighing 2.5kilograms

Solve 2x+y=3 x+y=5 in substitution method

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.