Find mean of the following data.
X 5 10 15 20
F 3 6 3 4
25
4​

Acity plans to build a new rectangular-shaped park. the perimeter of the park will be 940 meters. the width of the park will be 300 meters. what will be the length, in meters, of the new park?

How to solve a simultaneous equation involved with fractions?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?