The standard deviation is the square root of the variance...so that means the variance is the standard deviation squared.
2.3^2 = 5.29 <===
        
             
        
        
        
its about drive its about power we stay hungry we devour pick in the work put in the hours and take whats ours  
 
        
                    
             
        
        
        
Answer:
   -8 ≤ y ≤ 8
Step-by-step explanation:
Subtract 7 from the first one:
   y ≥ -8
Subtract 3 from the second one, then multiply by 4.
   y/4 ≤ 2
   y ≤ 8
Now, you can write these as a compound inequality:
   -8 ≤ y ≤ 8
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<em>Additional comment</em>
You basically solve these the same way you would an equation. The only difference is that multiplying or dividing by a negative number will reverse the inequality symbol:
   2 > 1
   -2 < -1 . . . . . multiplied above by -1.
 
        
             
        
        
        
The number -3 written as a logarithm with a base of 2 is log₂(0.125) or log₂(1/8)
<h3>What are logarithms?</h3>
As a general rule, logarithms are mathematical expressions that are written in the form log(x) or ln(x), for natural logarithms
<h3>How to rewrite the number as a logarithm?</h3>
The number is given as:
x = -3
The base of the logarithm is given as:
Base = 2
To rewrite the given number as a base of 2, we take the exponent of the number where the base is 2
This is represented as:
Number =2^-3
Apply the power rule of indices
Number =1/2^3
Evaluate the exponent
Number = 1/8
Evaluate the quotient
Number = 0.125
Hence, when the number -3 is rewritten as a logarithm with base 2, the equivalent logarithm expression is log₂(0.125) or log₂(1/8)
Read more about logarithm at:
brainly.com/question/20785664
#SPJ1
 
        
             
        
        
        
Answer:
38.28cm²
Step-by-step explanation:
The area of the figure can be determined by expression the figure as two shapes.
   A semicircle and trapezium;
  Area of shape  = Area of semicircle + Area of trapezium
Now;
  Area of semicircle  = 
   Where r is the radius, which is  = 2cm;
 = 2cm;
    Area of semicircle  =  = 6.28cm²
   = 6.28cm²
Area of trapezium; 
         = 
 a and b are the base length = 6cm and 10cm
  h is the height = 4cm 
Input the parameters and solve; 
        =   
  
        = 32cm²
The area of the shape = 6.28cm² + 32cm² = 38.28cm²