The length of each side of an equilateral triangle is decreased by 3 inches, so the perimeter is now 21 inches. what is the original length of each side of the equilateral triangle

The Perimeter then would be 30 Inches!

:V

An equilateral triangle has equal sides

so if you divide the perimeter by 3 you would get the length for all of the sides

21/3 = 7

since it said it was decreased by 3 inches you add 3 inches back

7 + 3 = 10

so the original length of one side of the triangle is 10 inches

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.