An obtuse angle measures 180 degrees. a) always , b) sometimes , c) never

That's never true.  An obtuse angle is defined as an angle
that measures less than 180° (and more than 90°).

Once it gets to be 180°, it's not an obtuse angle any longer.

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.