How to find the number of sides of a polygon when given the interior angle sum

Given:

Sum of interior angle

To find:

Number of sides of a polygon

Solution:

Using sum of interior angles formula:

where "S" is the sum of interior angels and "n" is the number of sides of a polygon.

Divide by 180° on both sides.

Cancel common factor 180°.

Add 2 on both sides.

Switch the sides.

Therefore number of sides of a polygon is .

13.33%

say 50 oranges, then 100 apples

80 are red, 20 are yellow

total fruit = 150

20chances out of 150 for yellow

20/150 = 13.33%

answer is the third choice:

3x^5+4x^4+x^3+2x^2-10x-7=0

step-by-step explanation: