Answer: 6 feet describes the center, and 9 feet describes the spread
Step-by-step explanation:
The center of a data set is mostly considered as the median or the mean
Here mean is 6 (given). And median is also 6. As 6 is exactly at the middle of the data set. (When arranged in ascending order)
Now, one of the way of calculating the spread is calculating the range, here it's given that the range is 9.
Therefore, 6 feet describes the center, and 9 feet describes the spread is correct.
Answer:
6
Step-by-step explanation:
Given expression:
a varies directly as b;
a ∝ b
So;
a = kb where k is the constant of proportionality;
if a= 7 and b = 2;
7 = 2k
k = 
Now, find b when a = 21
21 = x b
b = 6
Answer:
36
Step-by-step explanation:
4(5(2)-1)
4(10-1)
4(9)
36
Hope this helps!
Answer:
585 miles
Step-by-step explanation:
divide 715 by 11 so that you can see the mph (miles per hour). Then multiply that number by 9 for the amount of miles he would travel in nine hours
715/11=65
65x9=585
