Problem-solving Amanda, Chen and Mark shared some money in the ratio 2:4:9. Mark got £84 more than Amanda.
How much money did Chen get?

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

Talia took the bus from her home to the bank and then walked back to her home along the same route. the bus traveled at an average speed of 40 km/h and she walked at an average speed of 5 km/h. to determine the time, x, that it took talia to walk home, she used the equation 40(0.9 – x) = 5x. the time of trip 2 is hours. the distance of trip 1 is km.

Which shows one way to determine the facts of x3+4x2+5x+20 by grouping