Answer:
2
Step-by-step explanation:
Because To get a single x you would have to divide 5x by 5. Whatever you do to one side you have to do to the other so you would do 5 x/5 and get 10/5 and then x=10/5 and 10/5 equals 2 so...x=2 , Hope this helped!
 
        
             
        
        
        
Answer: First option.
Step-by-step explanation:
  1. To solve this problem you can applly the quadratic formula, which is shown below:
  
 2. The quadratic  equation is:
 
 3. Then:
 a=1
 b=-4
 c=-38
 4. Therefore, when you substitute these values into the quadratic formula, you obtain the following result:
 
 x=2±√42 
 
        
                    
             
        
        
        
Step-by-step explanation:
Initially, there's only 1 letter.
Tania sends the letter to 4 friends.
Each friend sends a letter to 4 more friends (4 × 4 = 16).
Each of those friends sends to 4 more friends (16 × 4 = 64).
The pattern is 1, 4, 16, 64, etc.
This is a geometric sequence.  The first term is 1 and each term is 4 times the previous term.
a₁ = 1
aₙ = 4 aₙ₋₁
The explicit formula is:
aₙ = 1 (4)ⁿ⁻¹
 
        
             
        
        
        
THat's lightning brodda 
jk 
i feel like it's c
        
             
        
        
        
Answer:
x= -2
Step-by-step explanation:
7x-3=4x-9
3x-3= -9
3x= -6
x= -2