Answer:
there is a 15/80 chance she will pick a black pen
there is also a 65/80 chance she will pick a blue pen
Step-by-step explanation:
Ok this is not as hard as it seems
(4.5 feet)^2 times the number of students (13)
20.25 x 13
263.25 is the correct answer
I hope it helps :<
All of the values follow the same formula rule. n= n x (n-1) / 2
Use this formula to find the number of segments.
Answer:
180
Step-by-step explanation:

192-12=180
Answer:
70 hours.
Step-by-step explanation:
you need to subtract 450 from 75 which tells you you need 350 more dollars then you need to do 5x70 which gives you 350.