Answer:
On the surface of the lake
Step-by-step explanation:
A position of 0 represent that the object is on the surface of the lake. Negative 3 represents 3 feet below the surface of the lake.
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3 times 219 is 657 so you need 6 hundred value blocks 5 ten value blocks and 7 one value blocks
Answer:
Mean = 30
standard Deviation = 2.74
Step-by-step explanation:
Formula
mean = np
Standard Deviation = 
from the question = 40
P = 75% or 0.75
q = 1 - p = 1 - 75% or 1 - 0.75
To find mean
mean = 40 x 0.75
= 30
For Standard Deviation (SD)
Standard Deviation =
= 
= 
:. Standard Deviation = 2.74
Just do 5 1/5 divided by 1 2/5