An exterior angle is equal to the sum of the 2 non adjacent angles. In this case
100 = x + 70 Subtract 70
x = 100 - 70
x = 30
Should be 21 boys because 7+7+7 equal 21 and 3+3+3 equal 9 which equals 30
Answer:


Step-by-step explanation:
Since we believe it
The number sequence is that those which can be described as
and that is not ending and recurring. Figures that are unreasonable are also the ones, that are not
and therefore are non-ending, non-recurring.
The number sequence is 
Rational amount since it is classified as
.
is really a rational number.
is a real function, since it does not end but repeats it.
The rational number 
Unreasonable number
.