So in order to compare, the measurements have to same units. So lets convert everything to feet.
George 2 yds = 6 ft Kelsey 68 inches = 5 ft 8"
Mariah 5 feet Brian 5 ft 10 "
George measured the tallest at 6'
Hope this helped.
Answer:

Step-by-step explanation:
If yours is 
4+2=6 then you bring the 6 to the other side so you have combine like terms. 6-6=0 so its 0
Answer:
B=6
Step-by-step explanation:
<em>1: 13,148,719.2 beats</em>
<em>2: 5 5/6 days</em>
<em>3: 7 days, 5 hrs, and 2 minutes</em>
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<em>Hope this helped. Have a good day~</em>