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:
The distance between the zoo and the library is 400ft
Step-by-step explanation:
Let x be the distance between point G and the zoo
Let y be the distance between the zoo and the library
To solve this problem quickly, we use trigonometric relations
tan(angle) = opposite cathetus / adjacent cathetus
In this case
tan(30) = (200√3) / (x+y)
(x+y) = (200√3)/ tan(30)
(x+y) = 600 ft
For the other angle
tan(60) = (200√3) / (x)
(x) = (200√3)/ tan(60)
x = 200 ft
y = 600 ft - 200 ft = 400 ft
The distance between the zoo and the library is 400ft
Answer:
Almost about 4500 mm
Step-by-step explanation:
Measure the pennies width and estimate. Multilpy by 2000 and there you go!
Answer:
21
Step-by-step explanation:
Now it would be
-2.3+(-5.9)
now just add those two together
and u get -8.2
So the answer is A