Answer:
A
Step-by-step explanation:
A shows a counterclockwise 90° rotation, so it is the correct answer.
B shows a reflection.
C shows a translation.
 
        
             
        
        
        
To factor you have to do this: 
s^2 + 9s = -20
      + 20    +20
s^2 + 9s + 20 = 0
now you need to numbers that multiplied give you 20 
and then those same 2 numbers have to add to 9
5 x 4 = 20
5+ 4 = 9
(x + 4) (x+ 5)
that means that x= -4, and -5
        
             
        
        
        
Answer:
0,-7 8,567;7,57,6,6,6,6,6,78,3,5
 
        
             
        
        
        
Answer: 2.28%
Step-by-step explanation:
μ = 71.8
σ = 3.4
X < 65
P(X < 65) = P (Z < 65 - 71.8/3.4) = P (Z < -2) 
According to the table for the normal distribution attached, it will give us 
P (z < Z < 0), this way, to find the P(Z < z), we need to do 0.5 - P:
 0.5 - P(-2 < Z < 0) = 0.5 - 0.4772 = 0.0228
In percentage: 0.0228*100 = 2.28%
 
        
             
        
        
        
<h2>
Answer:</h2>
<em>You will bike 30.2 miles in the seventh day according to the prediction.</em>
<h2>
Explanation:</h2>
Here we have the following data, You bike
- 5  miles the first day of your training,
- 5.4 miles the second day,
- 6.2 miles the third day, and
- 7.8 miles the fourth day.
So we can know some facts:
- From the first day to the second day the number of miles increases:

- From the second day to the third day the number of miles increases:

- From the third day to the fourth day the number of miles increases:

By taking a look at the pattern, we can see that each day you increases the number of miles by a factor of 2 compared to the previous day. So:
- From the fourth day to the fifth day the number of miles increases:

- From the fifth day to the sixth day the number of miles increases:

Finally:
- From the sixth day to the seventh day the number of miles increases:
