If (5^11) × (4^5) = 5 × (10^k), what is the value of k?
On a ferry, there are 50 cars and 10 trucks. The cars have an average mass of 1200 kg and the trucks have an average mass of 3000 kg. What is the average mass of all 60 vehicles on the ferry?
what is 1/4 multiplied by 1/2?
what is the greatest common factor of 24 and 16?
half of a number plus 5 is 11. what is the number?
the sum of two consecutive even integers is 26. what are the integers?