(a) give an example of three planes in r^3 that have a common line of intersection. justify your answer.

(b) give an example of three planes in r^3 that intersect in pairs but have no common point of intersection. justify your answer.

(c) give an example of three planes in r^3 that intersect in a single point. justify your answer.

Since the root of 55 is 7.416 the numbers you are looking for are 7 and 8 because 7.416 is larger than 7 but less than 8.

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.