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

The given expression is

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

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

`31.4 trillion decimal places.

Explanation:

As far as we know Google found out that there is about 31.4 trillion decimal places which is rounded to 3.14. Google is not 100% accurate though, Pi is a mathematical number that never ends so we just use what we know which is 3.14. Pi is an ideal that in numerical terms can be approached, but never reached. In order to calculate Pi simply involves taking any circle and dividing its circumference by its diameter. William Jones is the "founder" of Pi in 1706. Jones was a British little-known mathematics teacher, Jones was the first person to use a symbol to represent the platonic concept of Pi.

I hope this helps.  :   )