Answer:
The answer to number 9 is: 148.16
Answer:
3 (z = 35)
Step-by-step explanation:
(22 + 19) + 104 + z = 180° => triangle sum theorem
41 + 104 + z = 180
145 + z = 180
145 + z - 145 = 180 - 145
z = 35
20^2+21^2=29^2 can be used to determine if the triangle is a right triangle
