The exterior angles of a triangle are 3y, 4y and 5y find the smallest interior angle of the triangle

I don't know maybe it this way but am sure the answer is 15

Step-by-step explanation:

3y+4y+5y=180(sum of angle in a triangle)

12y=180

divide both side by 12

ur Y will be

y=15

figure c

step-by-step explanation:

hope this .

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.