Sally uses her van to deliver boxes to shops. She can put a maximum weight of 450 kg in the van.
Sally has to deliver 50 boxes to a shop.
Each box has a weight of 30 kg.
Work out the least number of times Sally has to drive to the shop to deliver all 50 boxes.
You must show all your working.

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?

How to simply and write the answer n a whole number

Solve the following: 12(x^2–x–1)+13(x^2–x–1)=25(x^2–x–1) 364x–64x=300x