Answer:
(a)
Step-by-step explanation:
Given
See attachment for sets A and B
Required
The true statement about both sets
First, we calculate the typical values (mean) of set A and set B.
This is calculated as:

For A:



For B:



<em>Here, we can conclude that B has a larger typical value</em>
Next calculate the spread (range) of sets A and B
This is calculated as:

For A:


For B


<em>Here, we can conclude that A has a larger spread.</em>
<em></em>
<em>Hence, (a) is true</em>
Answer:
-1/8
Step-by-step explanation:
9-5(4-2)
--------------
3+5
First do the parentheses
9-5(2)
--------------
3+5
Then calculate the top and bottom of the fraction
We need to multiply and divide first
9-10
--------------
3+5
-1
--------------
8
Answer: 9.1
Sqrt(81)=9
So 9.1 is larger!
Thanks!