to calculate pi you can use the Nilakantha Series.
Answer:
A and B
Step-by-step explanation:
-3 and -2 are the only values less than or = to -2
the rest are greater than -2
Well maybe because the only thing that is different is the - and +
Answer: 
Step-by-step explanation:
Given



from the figure, we can write

Hi there!
The expression mr ÷ nr is equal to this.
Since the property of equality states that ab + ac = ba + bc and the like, this equation is true.
Hope this helps!