The answer is No because the sample is not representative of the whole population. The standard deviation of the sample is not a good estimate of the variation of the salaries of the TV personalities in general because a single sample is not counted as a whole. Standard Deviation is a quantity that is calculated to indicate the extent of deviation of the population or group as a whole. Standard deviation also represented by the symbol σ means sigma in Greek letter or s in Latin letter. It is also the measurement of a set of data values that are used to quantify the amount of variation.
        
             
        
        
        
Answer:
By hypotenuse - side test (HL) the two triangles are congruent.
Step-by-step explanation:
In ∆ABC and ∆DCB
i) angleABC = angleDCB.....(each 90°)
ii) BC = BC .....( common side)
iii) AC = DB.....(given)
 therefore by hypo-side test ∆ABC congruent ∆DCB
 
        
                    
             
        
        
        
Answer:
infinite solution
Step-by-step explanation:
because it is a linear equation.
 
        
             
        
        
        
Answer:

Step-by-step explanation:
When you have exponents above a like term and they are being multiplied together, you add them. 
For example:

So let's group like terms in the numerator:
  We can add terms like in the example.
   We can add terms like in the example.

Let's rearrange the denominator.

Now we have: 
 Cancel like terms
  Cancel like terms
4/8 = 1/2     
 = 1  So it cancels
 = 1  So it cancels
 = s Since s is raised to the -1 it goes on top and becomes s.
 = s Since s is raised to the -1 it goes on top and becomes s.

Now we combine everything back together:

 
        
             
        
        
        
Answer:
number of dimes is 8
number of quarters is 15
Step-by-step explanation:
let 'd' = number of dimes
let 'd+7' = number of quarters
.10d + .25(d + 7) = 4.55
.10d + .25d + 1.75 = 4.55
.35d = 2.80
d = 8
q = 7 + 8