1: Look at the 4, its a lot easier to multiply 5 x 5 rather than 5 x 4, plus if you are estimating, you are going to round either up or down.
2: Multiply 5 x 5 // the answer is 25.
3: Multiply 5 x 4 (the original) // which is 20.
There are 3 factors in the expression which are 2w w and 9
Answer: V=7.605π
Step-by-step explanation:
The cylinder formula is V=πr^2h
Substitute the values.
V=π(1.3)^2(4.5)
V=π(1.69)(4.5)
V=7.605π
Hope this helps!
Answer:
1. 0.0000454
2. 0.01034
3. 0.0821
4. 0.918
Step-by-step explanation:
Let X be the random variable denoting the number of passengers arriving in a minute. Since the mean arrival rate is given to be 10,

1. Requires us to compute

2. We need to compute 




3. The expected no. of arrivals in a 15 second period is =
. So if Y be the random variable denoting number of passengers arriving in 15 seconds,


4. Here we use the fact that Y can take values
. So, the event that "Y is either 0 or
1" is a sure event ( i.e it has probability 1 ).

Answer:
Option C. 
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its perimeters is equal to the scale factor
and
The scale factor is equal to the ratio of its corresponding sides
Let
z-----> the scale factor

simplify
