Convex hexagon abcdef has exactly two distinct side lengths. side ab measures 5 units, and side bc measures 6 units. the perimeter of hexagon abcdef is 34 units. how many sides of hexagon abcdef have measure 6 units?

  4

Step-by-step explanation:

If all were measure 5, the perimeter would be 30. The perimeter is 4 more than that. Each side that is 6 instead of 5 adds 1 to the perimeter, so there are 4 sides of length 6.

Check

2×5 + 4×6 = 10 + 24 = 34 . . . . the answer checks OK

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: