Find m∠C.
it is an obtuse triangle

According to the exterior angle theorem , the exterior angle of a triangle is equal to the sum of the two opposite interior angles
So
9x - 26 = (2x -12) + (4x + 43)
9x - 26 = 6x + 31
3x = 57
x = 19
Plug in x = 19 to find m
119> 90 is an obtuse angle so of course, it is an obtuse triangle

Welp life just is hard

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.