Seven divided by eight is 0.88 or 0.875
        
                    
             
        
        
        
Answer:
In step 2, he needed to divide both sides of the equation by 5
Step-by-step explanation:
we have

Solve for a------> That means isolate the variable "a"
step 1
Subtract 2b to both sides
 
 
step 2
Divide by 5 both sides
 
 
 
        
                    
             
        
        
        
First, create an equation with the criteria given.
If we let x be your number,

(

 is twice the product of 3 and x, and if it exceeds 

 by 10, then we add 10 to 

 to make the two sides of the equation equal.)
Now, solve for 

.
 
 
        
        
        
Answer:
a₂ = -3
a₃  = -1
Step-by-step explanation:
We have to  insert two arithmetic means between -5 and 1
Let a₁ and b₂ be the two arithmetic means between -5 and 1
-5, a₂, a₃, 1
Here,
We know that the nth term of an Arithmetic sequence
aₙ = a₁ + (n-1)d
a₄ = -5 + (4-1)d
1 = -5 + 3d     
1  + 5 = 3d
3d = 6
Dividing both sides by 2
d = 2
Also
a₂ = a₁ + (2-1)d
a₂ = -5 + d
a₂ = -5 + 2          ∵ d = 2
a₂  = -3
a₃ = a₁ + (3-1)d
a₃  = -5 + 2d
a₃  = -5 + 2(2)   ∵ d = 2
a₃  = -5 + 4
a₃  = -1
Thus, 
a₂ = -3
a₃  = -1
Thus, the sequence becomes:
-5, -3, -3, 1