State whether the given expression is a rational number or irrational number. give examples to support your answer . a)rational + irrational b)irrational + irrational c)rational x irrational d)irrational x irrational

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°