Answer:
40
Step-by-step explanation:
=12 * 2 = 24
=3 * 2 = 6
=5 * 2 = 10
= 24 + 6 + 10 =40
Part A: 65/90 because you take the given number of positive test and put it over the total number of test.
Part B: it’s dependent because it depends on the negative to get the probability/likely hood.
Answer:

Step-by-step explanation:
I hope I did this right:
So first thing to do is set up the equation.

Next thing to to is subtract 1/3 from both sides to get:

Next up, you will multiply each of the fractions by the opposing value
(multiply 1/8 by 3 and 1/3 by 8)


Alright almost done, by multiplying 24 by 5 you get 120, that will go in the numerator to make the math a lot easier.
K = 

Finally, you subtract 123 over 24 by 8 over 24.
K = 
Then just simplfy the 115/24 to get

Answer:
n=8
Step-by-step explanation:
6(n-4)=3n
6n-24=3n
-24=-3n
n=8