Answer:
d)
Step-by-step explanation:
<u><em>Explanation</em></u>
Given expression
= 
By using
(ab)ⁿ = aⁿbⁿ

= 
After simplification , we get


Answer:
1/10
Step-by-step explanation:
the friends eat 1/10 of the whole bar or 1/5 of half a bar
Vary Directly: y = k*x
Vary Inversely: y = k/x
Because x and y vary directly, our equation will look like the first one.
y = k*x
With the inputted values:
-16 = k * 4
Now, to find k, isolate the variable
k = -16/4 = -4
Your final equation will then look like this:
y = -4 * x
Answer:
-1/5
Step-by-step explanation:
42x=7[x-1]
42x=7x-7
42x-7x=-7
35x=-7
x=-1/5