Answer:

Step-by-step explanation:
Given
Represent Defective Bulbs with D and non good bulbs with G


The probability that one is defective and the other is not can be represented with: (D and G) or (G and D)
Which means that the defective is selected first, then the good one or the good one is selected first, then the defective one.
This is then calculated as:

We used Total - 1 on second selections because it is a probability without replacement





Answer:
See Below
Step-by-step explanation:
The surface area of cylinder is given by the formula:

Where
r is radius ( diameter is 4, so radius is 4/2 = 2)
h is height ( h = 9)
Lets find original surface are:

<u>Halving diameter:</u>
diameter would be 4/2 = 2, so radius would be 2/2 = 1
So, SA would be:

<u>Halving height:</u>
Height is 9, halving would make it 9/2 = 4.5
Now, calculating new SA:

Original SA is
,
Halving diameter makes it 
Halving height makes it 
So, halving diameter does not have same effect as halving height.
Answer:
30 in the class as total. 24/3= 8 30/3 =10
Step-by-step explanation:
The answer would be 26 because you're multiplying .5 times 52
Answer:
She would need 42 cups of flour
Step-by-step explanation: