Answer: The required fraction = 
Step-by-step explanation:
Let the required fraction = 
Given: Initial height = 192 inches
Height of ball after second bounce = 
Height of ball after third bounce = 
After the third bounce it is 3 inches off the ground.
So,

Hence, The required fraction = 
Answer:
fraction of the wall is limestone is 4/22
or 2/11 as a reduced fraction
Step-by-step explanation:
fraction of the wall is limestone is 4/22
the width is 22 in total
10 inches concrete = 10/22
8 inches brick : 8/22
4 inches limestone : 4/22
10/22+8/22+4/22=22/22=1
Answer:
I think it is b
Step-by-step explanation:
Answer:
Number of families in the sample is 218 families
Step-by-step explanation:
Given:
There are 24 families in the sample that turned on television for 21hours or less.
The 11th percentile of the data is 21hours .
The mean of the data is 36hours.
The standard deviation is 32.2hours.
To calculate number of families in the sample = 24 / 0.11 = 218 families