1212154545454 121 4654546+56546546464454-5454881/3148 486*5

What is the common difference in the following arithmetic sequence 7,3,-1,-5

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz