Answer: 
AB=29; BC=27
Step-by-step explanation: 
So they told us AB=4x+9 and that BC=5x+2, and AC=56 , now to help with the question you can draw this information on a number line. Now on a number you can see that basically AC=AB+BC. 
So you would write it as such,,
4x+9+5x+2=56
Combine like terms
9x+11=56 
Now you have to isolate the x by itself but first get rid of the 11. 
9x+11-11=56-11
You would get 
9x=45 
Here you can divide 9 by both sides to isolate x.
9x/9=45/9
{x=5}
Now to find the value for both substitue x in the equations for both 
1. AB=4x+9 where x is 5 
4(5)+9 =AB
20+9 =AB
29=AB 
You would do the same with BC 
2. BC= 5x+2 where x is 5 
5(5)+2= BC
25+2= BC
27=BC
If you want to check your answers you can just substitute x for 5 in the first equation we did where AC=AB+BC 
 
        
             
        
        
        
Answer:
249.4
Bc if you do 89,790 divided by 365 your answer should be 249.4 and some more numbers
 
        
             
        
        
        
Answer:
The probability is 0.31
Step-by-step explanation:
In this question, we are tasked with calculating the probability that a random plumber called at Denver will charge an amount greater than $86 given the mean and the standard deviation.
Firstly, we calculate the standard score of $86 using the mean and the standard deviation.
Mathematically;
z-score = (x-mean)/SD
where x = 86, mean = 84 and SD = 4
z-score = (86-84)/4 = 2/4 = 0.5
Hence, we want to calculate P(z ≥ 0.5)
Using standard table 
P( (z ≥ 0.5) = 1 - P(z ≤ 0.5) = 1 - ( 0.19146 + 0.5) = 0.30854
To the nearest hundredth = 0.31
 
        
             
        
        
        
its y-axis for the first answer and the other one its, y=-x
 
        
             
        
        
        
Answer:
b=1/2-9/4c
Step-by-step explanation:
first get B on one side
8b+18c=4
     -18c    -18c
8b=4-18c
divide both sides by 8
8b=4-18c
/8   /8 /8
b=1/2-9/4c