Answer:
2 1/15
Step-by-step explanation:
<em>Hey there!</em>
<em />
Well to multiply,
5 1/6 • -2/5,
we need to make 5 1/6 improper

31 * 2 = 62
6 * 5 = 30

Simplified,

2 1/15
<em>Hope this helps :)</em>
 
        
             
        
        
        
Hi!
Let's start with the mean.
The mean is all the numbers added together, divided by how many numbers there are. 
13+16+16+10+6+12+4+12+16=105
there are 9 numbers so..
105/9 = 11.7
The mean is 11.7 
Find the median. 
The median is the number in the middle of the data set when the numbers are in numerical order.
4, 6, 10, 12, 12, 13, 16, 16, 16
The median is 12. 
Find the mode.
The mode is the number that is repeated the most.
4, 6, 10, 12, 12, 13, 16, 16, 16
The mode is 16
Find the range.
The range is the difference of the smallest number from the biggest number.
16 - 4 = 12
The range is 12
The answer is 11.7, 12, 16, 12 
Hope this helps! :)
        
             
        
        
        
See attached picture for steps and answer:
 
        
        
        
Answer:

Step-by-step explanation:
Given  , start by squaring both sides to work towards isolating
, start by squaring both sides to work towards isolating  :
:

Recall  and
 and  :
:

Isolate the radical:

Square both sides:

Expand using FOIL and  :
:

Move everything to one side to get a quadratic:

Solving using the quadratic formula:
A quadratic in  has real solutions
 has real solutions  . In
. In  , assign values:
, assign values:

Solving yields:

Only  works when plugged in the original equation. Therefore,
 works when plugged in the original equation. Therefore,  is extraneous and the only solution is
 is extraneous and the only solution is 
 
        
             
        
        
        
You need to divide the two numbers. 15/3 = 5
For every 5 days you do 1 job
5:1