Answer:
C. The interquartile range is 55
Step-by-step explanation:
When you want to find the interquartile range you look at the box plot to see that it is everything from the upper interquartile range to the lower interquartile range is the interquartile range. So from 40 to 65. So there for the answer C. is incorrect.
Answer:
B. √5
Step-by-step explanation:
Given:

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Rewrite 9 as 5 + 4:

Rewrite 5 as (√5)², 4 as 2² and 4√5 as 2 · 2√5:

Apply the perfect square formula
:

Apply radical rule 

Simplify:

Answer:
15
Step-by-step explanation:
if he walks 6 kilometres per hour multiply 6 times 2 and you get 12 and he walked for half an hour and half of 6 is 3 so 12 plus 3 equals 15
Answer:
32 is the other number
think about it if you add
32+7 that is = to 39