A hemisphere.  The formula for a hemisphere is V = (2 / 3)πr^3<span>. r is the radius. if you are given a radius, plug it into the formula to find the answer if a radius is given. </span>
        
             
        
        
        
Answer:
14/15
Step-by-step explanation:
 
        
                    
             
        
        
        
The first thing we must do for this case is to define a variable:
 x: number of years
 y: total salary
 We have then:
 For first company:
 y = 1500x + 31000
 For second company:
 y = 2000x + 28500
 Equaling both equations we have:
 1500x + 31000 = 2000x + 28500
 Clearing x:
 2000x - 1500x = 31000 - 28500
 500x = 2500
 x = 2500/500
 x = 5
 Answer:
 It will take for the salaries to be the same about:
 x = 5 years
        
             
        
        
        
To solve this problem, you must follow the proccedure that is shown below:
 1. You need to apply the formula for calculate the perimeter of a circle, which is:
P=2πr
 P is the perimeter of the circle (P=9.42 feet).
 r is the radius of the circle.
 2. Now, you must clear the radius "r" from P=2πr, as below:
 P=2πr
 r=P/2π
 3. When you substitute the values, you obtain:
 r=P/2π
 r=9.42 feet/2π
 r=1.49 feet
 4. Now, you can calculate the diameter (D):
 D=2r
 D=2(1.49 feet)
 D=2.98 feet
<span>
 What's the diameter of the wheel?
 The answer is: </span><span>2.98 feet</span>
        
             
        
        
        
![\sqrt[3]{\dfrac{-27}{125}} = -\sqrt[3]{\left(\dfrac{3}{5}\right)^{3}}=\dfrac{-3}{5}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B%5Cdfrac%7B-27%7D%7B125%7D%7D%20%3D%20-%5Csqrt%5B3%5D%7B%5Cleft%28%5Cdfrac%7B3%7D%7B5%7D%5Cright%29%5E%7B3%7D%7D%3D%5Cdfrac%7B-3%7D%7B5%7D)
The appropriate choice appears to be ...
   B. -3/5