Answer:
Step-by-step explanation:
3) Find the LCM of 30 and 9
30 : 30 , 60 , 90, 120
90 : 90, 180
LCM = 90
He will have both activities after 90 days.
4) Sum of any two sides should be greater than the third side.
a) 8 ft , 11ft , 9 ft
8 + 11 = 19 > 9 and
11 + 9 = 20 > 8 and
8 + 9 = 17 > 11
So, 8 ft , 11 ft and 9 ft will form a triangle
b) 4 m, 5.1 m , 12.5 m
4 + 5.1 = 9.1 < 12.5
So, This will not form a triangle.
