Answer:
35000
Step-by-step explanation:
 
        
             
        
        
        
Answer:
- 6 
Step-by-step explanation:
Step 1:
x ÷ 3 - 5 = - 7   Equation
Step 2:
x ÷ 3 = - 2   Add 5 on both sides
Answer:
x = - 6   Multiply 3 on both sides
Hope This Helps :)
 
        
             
        
        
        
<span>Difference of squares method is a method that is used to evaluate the difference between two perfect squares.
For example, given an algebraic expression in the form: 
 
 can be factored as follows:

From the given expressions, the only expression containing two perfect squares with the minus sign in the middle is the expression in option A.
i.e. 

which can be factored as follows:

.</span>
 
        
        
        
Given that, a sphere has a surface area of about 999 square millimeters. 
Formula to find the surface area of sphere is, 
S= 4πr² Where r = radius of the sphere and S= surface area. 
Given S= 999 square millimeters.
So, we can write:
4πr² = 999
4 * 3.14 * r² = 999 Since, π = 3.14
12.56 *r² = 999 
 Divide each sides by 12.56.
 Divide each sides by 12.56.
 r² = 79.53821656
r = √79.53821656 Taking square root to each sides of equation.
r = 8.918420071
So, r = 8.918 Rounded to nearest thousandth.
So, radius of the sphere is 8.918 millimeters.
Hope this helps you!