Answer:
9 inches
Step-by-step explanation:
The volume of a pyramid is given as:

where l = length of base of pyramid
w = width of base of pyramid
h = height of pyramid
The volume of the cylinder is already known (
) and the other two dimensions are known as 5 in and 7 in.
From the formula of the volume of the pyramid, the height of the pyramid is given as:

Hence, the height of the pyramid is:

The pyramid's height is 9 inches.
Answer:
there was a 16% increase since 2010 to 2012
Step-by-step explanation:
lets say the train had 100 people on it in 2010 and in 2011 it had an 8% increase which then brings you to 8 plus 100 and you get 108.
Now in 2012 there was an increase 8%, so you will add 8 to your previous answer 108 and receive 116. So now there was 16 more passengers in 2012 than in 2010. Transfer the 16 passengers into 16% and you now have your answer.
Answer: Minimum sample size = 110
Step-by-step explanation:
Formula to find minimum sample size :
, where z = critical z-value for confidence level, s= sample standard deviation , E = margin of error
Given: E= 4 , s= 18
Critical z-value for 98% confidence = 2.327
So, 

Minimum sample size = 110
The area of section 1 is 12 square feet, the area of section 2 is 40 square feet, and the area of section 3 is 6 square feet.
Answer:
n=15/8
Step-by-step explanation: