Answer:
is correct, he determines it correctly, he solved it correctly, 238.5
Step-by-step explanation:
Answer:
Step-by-step explanation:
Decrease = 100 - 49 = 51
Percentage of decrease =

= 51%
Answer:
4.1
Step-by-step explanation:
Divide 1.2 and 2.3
Answer: 40
Step-by-step explanation:
The angles form a straight angle, so y = 180 - 80 - 60 = 40.