20/q = 7/9
20×9 = 7q
7q = 180
q = 180/7
Answer:
5
Step-by-step explanation:
(125) ^ (1/3)
What number times itself times itself =125
a*a*a =125
5*5*5 = 125
Step-by-step explanation:
The number of way to select 2 employees from 40 is 40C2.
The number of way to select 2 employees from 22 is 22C2.
So the probability of the two employees having single-vision correction is just the number of ways to select the 22 employees (22C2) divided by the total number of ways to select 2 employees (40C2).
22C2 / 40C2 = 77/260
We can use the same technique for the bifocal employees.
18C2 / 40C2 = 51/260
Answer:
I think D is the right answer
Line 1-2= associative property of addition
Like 2-3=communities property of addition
