What is the least common multiple of 6 and 15? a) 3 b) 9 c) 21 d) 30

D

Step-by-step explanation:

multiples of 6 : 6, 12, 18, 24, 30, 36,

multiples of 15 : 15, 30, 45,

From the lists the least common multiple is 30

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from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers