Answer:
B and D
Step-by-step explanation:


Answer:
0.077
Step-by-step explanation:
From the table :
Number of students aged 31 - 35 = 60
Number of students over 35 = 26
Total number of students = total possible outcomes = 1123
Required outcome = (students aged 31 - 35) + over 35 = 60 + 26 = 86
Probability = required outcome / Total possible outcomes
Probability (at least 31) = 86 / 1123 = 0.0765
= 0.077 (3 decimal places)
Answer: 0.45
Step-by-step explanation:
Answer:
a=9
divide 81 by 9 on both sides and you get 9.
Step-by-step explanation: