Answer:
0.0423 is the probability that the adult female has a height less than 61.3 inches.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 65.3 inches
Standard Deviation, σ = 2.32 inches
We are given that the distribution of adult female height is a bell shaped distribution that is a normal distribution.
Formula:
 
P(adult female has a height less than 61.3 inches)
 
Calculation the value from standard normal z table, we have,  
 
0.0423 is the probability that the adult female has a height less than 61.3 inches.
 
        
             
        
        
        
Answer:
The volume is 7.9 units
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
C
Step-by-step explanation:
the area of a triangle is
baseline × height / 2
so, we know in our case
b(b+12) = 189 cm²
b² + 12b - 189 = 0
let's try to solve this by completing the square.
that means we try to find the expression
(b + k)² + c
that is equal to
b² + 12b - 189
(b + k)² + c = b² + 2kb + k² + c = b² + 12b - 189
so,
2k = 12
k = 6
and then
k² + c = -189
6² + c = -189
36 + c = -189
c = -225
(b + 6)² - 225 = 0
(b + 6)² = 225
b + 6 = 15
b = 9
so, the baseline b = 9 cm.
the height b+12 = 9+12 = 21 cm.
 
        
             
        
        
        
Answer:
20% or 0.2
Step-by-step explanation:
u do 14÷70=0.2
to get the percent you move the decimal two places right 
0.2⇒20.0⇒20%