Which biconditional is not a good definition ?

a.) a whole number is even if and only if it is divisible by 2
b.) a whole number is off if and only if the number is divisible by 2
c.) a ray is a bisector of an angle if and only if it splits the angle into two angles
d.) an angle is straight if and only if it's measure is 180

d

Step-by-step explanation:

An angle is straight if and only if its measure is 180

2.83941151 would be the answer you're looking for! : )

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