An=a*q^(n-1)
a7=a*q^6
a7=4096*(1/2)^6=4096/32=128
Answer:
The value of E [Z] is 0.50.
Step-by-step explanation:
The expected value is computed using the formula:

Denote the three dices as follows:
X₁ = a four-sided die
X₂ = a six-sided die
X₃ = a 12-sided die
Define the indicator variables as follows:

The probability of rolling a 4 in the three dices are as follows:

Compute the value of E [Z] as follows:


Thus, the value of E [Z] is 0.50.
The volume of a rectangular pyramid = 1/3 ×Area×height
=1/3×L×W×H
if the dimensions were doubled
therefore,
V=1/3 × (9×2)×(14×2)×(10×2)
=1/3×18×28×20
=3360 cubic centimetres
Bro I don’t know the answer to this one but I hope someone can help you
Labor costs of the workers at $8 per hour working 40 hours each=$640
Revenue for the week=$2000
therefore labor cost as a percentage of revenue would be=32%