Answer:
Step-by-step explanation:
cant help sorry- :T
The sum of all interior angles in a polygon, regular or not, is
18(n - 2)
where "n" is how many sides are there in the polygon, now, notice, this polygon has 7 sides, so is a heptagon, so the sum of its interior angles will be 18(7 - 2) or 900.
now, subtract all other angles from 900, and what's leftover is "x".
First, find common denominators. The smallest common denominator is 12. Multiply 4 to numerator and denominator for -9/3 to get it over 12
(-9/3)(4/4) = -36/12
- 5/12 - (-36/12)
Simplify. Note that when there are two negatives, it becomes a positive
- (-36/12) = + 36/12
-5/12 + 36/12 = 31/12
31/12 is your improper fraction answer.
Simplify. Change it into mixed fraction.
31/12 = 2 7/12
2 7/12 is your mixed fraction answer.
hope this helps
21/2%=
21/0.02=
1,050
21 is 2% of 1,050
Check:
1,050*2%=
1,050*0.02=
21