The first step is to write this equation into general form. The
general form of an equation is:
ax^2 + bx + c = 0
To make this equation to general form, you have to simplify
the equation first.
2/3(x-4) (x+5) = 1
2/3 (x^2 + 5x – 4x – 20) = 1
2/3(x^2 + x -20) = 1
2/3x^2 + 2/3x – 40/3 = 1
2/3x^2 + 2/3x – 40/3 – 1 = 0
2/3x^2 +2/3x – 43/3 = 0
Therefore, a = 2/3 ; b = 2/3 ; c = -43/3   
 
        
                    
             
        
        
        
Answer:
D. 60
Step-by-step explanation:
4(3x + 3) = 5(x + 8)       12(4) + 12         5(4) + 40
12x + 12 = 5x + 40        48 + 12               20 + 40
-5x          -5x                   60                        60
7x + 12 = 40
  -12        -12
7x = 28
x = 4
 
        
             
        
        
        
Answer:
a)%85,5
b)%92,2
Step-by-step explanation:
a) To determine the probability of getting a hand with at least one face, we need to calculate the probability of the hand without any face firstly.

Then, we need to deduct this value from the probability 1

The probability of the hand with at least one face is %85,5.
b)To determine the probability of a hand with at least one ace and face we will track the same road again.

Then, we need to deduct this value from the probability 1

The probability of the hand with at least one ace and one face is %92,2.
 
        
             
        
        
        
Answer: for 2 cups, There are 232 Calories.
Step-by-step explanation:
 Step 1 
 Let the calories in one cup be represented as C
  Therefore 
 3/4 x C = 87 calories 
C = 87 X 4 / 3 = 116
 unit rate is 116 calories per cup.
 Step 2- Solving the number of calories in 2 cups 
 1 cup serving = 116 calories
 2 cups servings = 116 x 2= 232 calories 
 
        
             
        
        
        
<span>B)	A key chain can hold 3 keys. If there are a total of 12 keys, how many key chains are there?</span>