Answer:
k=2
Step-by-step explanation:
3^k*2 * 3^-k+2 = 81
Factor out 81 to be : 3^4
Rewrite the equation:
k*2 - k+2 = 4
k^2 - 2k = 4
Simplify : k+2 = 4
<u> - 2 - 2</u>
k = 2
You need to make sure that you are not dividing by zero
so y - 1 = 0
y = 1
<span>y = 1 is the nonpermissible replacement for y in this expression </span>
Answer:
x=-1
Step-by-step explanation:
Answer: the mean of the sample is 3.25 and the difference is 0.75
Step-by-step explanation: