Answer:
Step-by-step explanation:
option 4
Answer:
c) 81.5
Step-by-step explanation:
Listing the 25 ages in crescent order:
60 61 62 63 64 65 66 68 68 69 70 73 73 74 75 76 76 81 81 82 86 87 89 90 92
The upper or third quartile's position is given by:

This means that the third quartile is the average between the 19th and 20th numbers:

The upper quartile is 81.5.
Answer:
a/ac + 2b
Step-by-step explanation:
2a - b = ac + 3b
2a = ac +4b
2a/ac+4b = a/ac + 2b
Answer:
i think its 90% but im not 100% sure
Step-by-step explanation:
Additive inverse property I think