<span>The expression given (27x^2)z/(-3x^2)(z^6), can be simplify as below:
By properties of powers, if you have the same base, you can substract the exponents. Then:
=(</span>27x^2)z/(-3x^2)(z^6)
=-9z/z^6 (As you can see: x^2-2= x^0=1)
=-9/z^5 (Then, z^6-1=z^5)
<span>
Therefore, the answer is: The exponent on the variable z is 5.</span>
Answer: 
Step-by-step explanation:
The given geometric series are:
a)
on simplifying in decimals, we get

b) 
on simplifying in decimals, we get

c)
on simplifying in decimals, we get

Thus, this geometric series represent 0.4444.
d)
on simplifying in decimals, we get

Answer:
its either 19.25 or 22.75
Step-by-step explanation:
F(t)=5t+10, 5 dollars for each our plus 10 dollar initial fee