Answer:



Step-by-step explanation:
Given




Solving (a): 
This is calculated as:


Solving (b): 
This is calculated as:
-- this is so because the selection is without replacement



Solving (c): 
Using the complement rule, we have:

To calculate
, we have:
--- Green
---- Not green
The probability that both selections are not green is:

So, we have:



Simplify


Recall that:


Take LCM


Answer:
19w-11
Step-by-step explanation:
Answer:
9 dollars per dog
Step-by-step explanation:
45/5=9
you divide to find the unit rate per 1 dog walked.
So each bar contains 6 and she has 20 so 6 times 20=120
pyramid volume=legnth times width times height times 1/3
v=base times height times 1/2
v=1 times 2 times 1/3
v=2/3
volume of 1 pyramid is 2/3 cubic inches
divide 120 by 2/3 to find out how many pyrimds will fit into amount given
120/1 divide by 2/3=120/1 times 3/2=360/2=180
she can make 180 pyramids