Answer:
Chi-square value = 2
Step-by-step explanation:
Given data:
Frequency:      Tall     Short
                          30       20
Null hypothesis ( as it is already given so there is no difference between observed and expected values)
Ratio:    1:1 (50% expected frequency of each tall and short pea-plant)
Solution:
Phenotype  Observed  Expected O-E  (O-E)²  (O-E)
                           O                  E
Short                 20               25        -5       25        1                           
TALL                  30               25         5        25       1
TOTAL                                                                       2
So, from all these calculations using expected and observed values we get chi-square value equal to 2.
 
        
             
        
        
        
It was 210 cm.
The function she used is h(t) = 210 + 33t.  This is a linear function, since it is of the form f(x) = mx+b.  In a linear function, we have the slope, m, which tells us how much the height increases per year, and the y-intercept, b, which tells us how tall it was when we began measuring.  Our m value would be 33 and our b would be 210, so the original height was 210.
        
                    
             
        
        
        
Answer:
3^5
Step-by-step explanation:
<em>exponents:</em>
1 - ( - 4 ) = 5
 Therefore, 
3^5
 
        
             
        
        
        
i believe your answer will be 0.04 or 4/100
OR if you need an equivalent expression, that would be 81/2187