Hello,
slope=s=(5-8)/(9-3)=-3/6=-1/2
        
             
        
        
        
Answer:
2nd one
Step-by-step explanation:
 
        
             
        
        
        
Answer:
<h2>
The standard error of the mean is 7.56</h2>
Step-by-step explanation:
The standard error of the mean is defined as the ratio of standard deviation to the square root of the sample size of a data. The standard error of the mean is mathematically expressed as shown below;

X is the standard error of the mean
 is the standard deviation
 is the standard deviation
n is the sample size.
Given;
 
On substitution into the formula we have;


X ≈ 7.56
 
        
             
        
        
        
Answer:
132 m 
Step-by-step explanation:
Refer to attachment for figure. 
In smaller triangle with angle theta , we have , 
⇒ tanθ = p/b 
⇒ tanθ = h/121m
⇒ tanθ = h/121 m
<u>In</u><u> </u><u>triangle</u><u> </u><u>with</u><u> </u><u>angle </u><u>9</u><u>0</u><u>-</u><u>∅</u>
⇒ tan(90-θ) = p/b
⇒ cot θ = h/144 m
Multiplying these two , 
=> tanθ . cotθ = h/121 m × h/144m 
=> 1 = h²/ (121 m × 144m )
=> h² = 121m × 144m
=> h= √ ( 121m × 144m) 
=> h = 11m × 12m
=> h = 132 m
 
        
             
        
        
        
Answer:
Step-by-step explanation:
1_|   1     -2     -5    6
      <u>          1      -1   -6</u>
        1     -1      -6   0
Q(x)= x^2 - x - 6
R: 0