Answer:
I believe the correct choice is B. I know that you have to combined the like term's but in this case their are nun so you would do the greatest root and decrees to the right
((-4x^3)(y^4))^-3
--------------------------
(2xy^4)^-4
16x^4y^16
=------------------------
-64x^9y^12
-16y^4
=------------------------
64x^5
-y
=------------------------
4x^5
So the final answer is:
-y^4
-------
4x^5
(Btw if "^" is in front of a number, that means it is an exponent, so when your writing this on paper, just write it as a regular exponent without the "^". I had to do that since I'm on a computer.)
Hopefully this was helpful in some way.
Answer:

Step-by-step explanation:
Given
See attachment
Required
Find RST
To do this, we use:
--- angle on a straight line
Make RST the subject


<em>Hence, the measure of RST is 144</em>
Answer:
Last I checked, its a fish
Step-by-step explanation:
Let the smaller number be x and the larger one be y
x + y = 77
y = x + 5
Substituting into the first equation
x + (x + 5) = 77
2x + 5 = 77
Subtracting 5 to both sides
2x +5 -5 = 77-5
2x = 72
Divide both sides by 2
2x/2 = 72/2
x = 36