Answer:
Hello,
answer C
Step-by-step explanation:

 
        
             
        
        
        
Here, You have to simplify every number to their simple form and place it on the arrow by approximation:
So, Here is your answers:
Upper Arrows (From Left towards right):
1st = -10√2/3
2nd = -√7
3rd = ∛4
4th = √50
Lower Arrows (From Left towards right):
1st = -√99
2nd = -√17
3rd = ∛9
4th = π
Hope this helps!
        
             
        
        
        
We can't see the rectangular prism...
        
             
        
        
        
Answer:
(1)
Multiplying by 3 both sides of the equality you get that 

3u  is in the Span of the vectors  .
.
(2)
That's not true, consider the following counter example. 

 is a linear combination of
 is a linear combination of  but is NOT a linear combination of
 but is NOT a linear combination of 
Step-by-step explanation:
(1)
As the hint indicates, you know that 

Then, if you multiply both sides of the equality by 3, you get that 

And that's it. 3u  is in the Span of the vectors 
(2)
That's not true, consider the following counter example. 

 is a linear combination of
 is a linear combination of  but is NOT a linear combination of
 but is NOT a linear combination of 
 
 
        
             
        
        
        
Hello from MrBillDoesMath!
Answer:
Slope = 4/5
Discussion:
Slope = (change in y) / (change in x)
Slope = 
(1-5)/(0-5)  =
-4/-5 =
4/5
Thank you,
MrB