Find the value of x
86
79
65
72

72

Step-by-step explanation:

The exterior angle of a circle has the theorem divide in 2 the sum of the arcs on the circle. But when the angle has this form, it would always be 360/2 = 180 which is not true. When it take this form, you must divide the difference of the two arcs.

The circle has an arc of 108 leaving an arc of 252.

252 - 108 = 144

144/2 = 72

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

ratio is 2 : 9

the answer is three

13.5 : 3