In mathematics, the reciprocal, or multiplicative inverse, of a number x is the number which, when multiplied by x, yields 1. It is denoted 1/x or x-1.
As go up the number sequence it is just the number added to get the new number plus 1. For example, since 2+3=5, 5+3=8+1=9
An irrational number is a number that can't be written as a simple fraction such as pi because you can't turn pi into a fraction.
X^3 = 27
x = 3√27
x = 3
The answer is: x = 3.
If circumference = 10 * PI
then a 90 degree central angle will "sweep out" one fourth of the circumference or 10 PI / 4 = 2.5 PI
So it is false.
