In triangle ABC, m angle A=x, m angle B= 2x+1, and m angle C= x+15. what is the value of x?

Asoccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.1 in

Can someone tell me if this is perpendicular? !

In right triangle xyz, the right angle is located at vertex y. the length of line segment xy is 12.4 cm. the length of line segment yz is 15.1 cm. which is the approximate measure of angle yzx? 34.8° 39.4° 50.6° 55.2°