Answer:
rational
Step-by-step explanation:
both 8 and 12 are rational and we are adding rationals number
In fraction is 3/4 and 3/4
Decimal is .75 and .75
Knowing the interior angle sum formula is;
180x(n-2)
180x(n-2)=1260 (solve for n here)
180n-360=1260
180n=1260+360
180n=1620
n=1620/180
n=9
Therefore, this polygon has 9 sides.
Hope I helped :)
Answer:
30454
Step-by-step explanation:
subtraction on a calculator
42812-12358=30454