Answer:
option A.

Step-by-step explanation:
To solve this, we need to use the following exponent rules:
Quotient rule: (a^n)/(a^m) = a^(n-m)
Power rule: (a^n)^m = a^nm
Power of a product rule: (ab)^n = (a^n)(b^n)
Then, we have the following expressions:
![[\frac{a^{-8}b}{a^{-5} b^{3}}}]^{-3}=[a^{-8+5}b^{1-3}}}]^{-3}=[a^{-3}b^{-2}]^{-3} =a^{9}b^{6}](https://tex.z-dn.net/?f=%5B%5Cfrac%7Ba%5E%7B-8%7Db%7D%7Ba%5E%7B-5%7D%20b%5E%7B3%7D%7D%7D%5D%5E%7B-3%7D%3D%5Ba%5E%7B-8%2B5%7Db%5E%7B1-3%7D%7D%7D%5D%5E%7B-3%7D%3D%5Ba%5E%7B-3%7Db%5E%7B-2%7D%5D%5E%7B-3%7D%20%3Da%5E%7B9%7Db%5E%7B6%7D)
So the correct result is option A.

Answer:

Step-by-step explanation:
Your answer was mostly correct. Just change < into 
Answer:
The value of x = 24.4 units.
Step-by-step explanation:
Given
For a right-angled triangle with sides a and b, the hypotenuse c is defined as

substituting c = x, a = 14 and b = 20


units
Therefore, the value of x = 24.4 units.
The question in English
<span>Each of the 25 students in the class has made a journal on Monday. Knowing that every day a page was used and that the month is 31 days, find out how many pages the logs of all students.
</span>Let
x--------------> total students
y--------------> total days in a month
z--------------> total page used per one student in 1 day
T--------------> total page used per total students in 1 month
we know that
x=25 students
y=31 pages
z=1 page
T=[x]*[y]*[z]------------> T=[25]*[31]*[1]------------> T=775 pages
the answer is 775 pages
<span>the answer in Romanian
</span>
lăsa
x--------------> numărul total de elevi
y--------------> <span>total zile într-o lună
</span>z--------------> <span>pagina totală utilizată pentru un student în 1 zi
</span>T--------------> pagina totală utilizată pentru toți elevii în 1 lună
noi stim aia
x=25 elevi
y=31pagini
z=1 pagină
T=[x]*[y]*[z]------------> T=[25]*[31]*[1]------------> T=775 pagini
răspunsul este de 775 de pagini
There are five basic rules of algebra.
...
They are:
Commutative Rule of Addition.
Commutative Rule of Multiplication.
Associative Rule of Addition.
Associative Rule of Multiplication.
Distributive Rule of Multiplication