Question

Evaluate each expression if r=-1, n=3, t=12, v=0, w=- 1/2. n^2r-wt

Answer 1

The given expression is

$n^2 r -wt$

And it is given r=-1, n=3, t=12, v=0, w=- 1/2 .

And we have to find the value of expression using these values .

So we substitute these values for the variables and evaluate the expression. And on doing so,we will get

$=3^2(-1)-(-1/2)*12 \\ = -9 +6 \\ =-3$

Therefore the value of the expression with the given values is -3 .