To find the value of 12x^-3y^-1 when x = -1 and y = 5, we substitute these values into the expression:
12(-1)^-3(5)^-1.
Let's simplify this expression step by step:
First, let's solve (-1)^-3:
(-1)^-3 = -1/(-1)^3 = -1/(-1) = 1.
Next, let's solve (5)^-1:
(5)^-1 = 1/(5)^1 = 1/5.
Now, we substitute these values back into the expression:
12(1)(1/5) = 12/5.
Therefore, the value of 12x^-3y^-1 for x = -1 and y = 5 is -12/5.
The correct answer is -12/5.
what is the value of 12x^-3y^-1 for x = -1 and y = 5?
-12/5
-180
-60
-5/12
1 answer