X = 5; 2(5) - 1 = 9. 4(9) = 36
        
                    
             
        
        
        
Answer:
   18.05 g
Step-by-step explanation:
The multiplier of the initial quantity is ...
   (1/2)^(t/1690)
so, for t=250, this becomes ...
   (1/2)^(250/1690) ≈ 0.902545
Then the quantity remaining of the initial 20 g is ...
   (20 g)(0.902545) ≈ 18.05 g
 
        
             
        
        
        
<h2>            <u>Rectangular</u> <u>Areas</u> <u>and</u> <u>Perimeters</u></h2>
The perimeter of a rectangle is given by:

In the problem we have these data:
- Perimeter = 6 + 2 (-2x + 20)
 
We replace the data in the equation of the perimeter:
<h3>6 + 2 (-2x + 20) = 2 (a - 2x + 20)
</h3>
We apply distributive property:
6 - 4x + 40 = 2a - 4x + 40
6 = 2a
6 ÷ 2 = a
3 = a
⇒ Length = 3
The area of the rectangle is given by:

We have these data:
We replace the data in the equation of the area:
<h3>Area = (3) (- 2x + 20)
</h3>
We apply the distributive property and obtain:
Area = -6x + 60
<u>The expression representing the area of the rectangle will be -6x + 60</u>
<h3>I hope I've helped!</h3>
 
        
             
        
        
        
Answer:
 it depends in u
 and I will be there at noon and I will get back to Live in the morning and I Challenge u Day my
 
        
             
        
        
        
Percent means parts out of 100
105%=105/100=1.05
'of' means multiply
105% of 260=1.05 times 260=273