Pouvez vous faire cette exercice svp (french pls)​

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

X+y=-4 x-y=2 use elimination with adding and subtraction

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.