Answer:
Step-by-step explanation:
To find the amount deposited, we will simply use the formula for calculating simple interest.
Simple Interest = pxrxt/100     (fraction)
Where p = principal
       R= Rate
            T= Time
Principal is the initial amount deposited which we are ask to find.
R is given to be 6%  and T is the time which is given in years
Simple interest is the interest earned over the year which is given to be $400
Lets substitute our variable into the equation
Simple Interest = pxrxt/100    (fraction)
$400  = P × 6 × 3   /     100
$400 = 18p/100    (fraction)
We will then cross multiply
$40 000  =   18 P
To get  the value of P, we divide both-side of the equation by 18
4000/18 = 18p/18     (fractions)
$2222.22 =  P
P = $2222.22
credits: ummuabdallah
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
 y = 18 + 3x²
- 18 - 18
__________

I am joyous to assist you anytime.
 
        
             
        
        
        
Answer:
not a right triangle
Step-by-step explanation:
We can use the Pythagorean theorem to see if it is a right triangle
a^2 + b^2 = c^2
15^2 + 12^2 = 21^2
225 + 144 = 441
369 = 441
This is not true so it is not a right triangle
 
        
                    
             
        
        
        
Answer:
x=−y−1
Step-by-step explanation:
y=−x−1
Step 1: Flip the equation.
−x−1=y
Step 2: Add 1 to both sides.
−x−1+1=y+1
−x=y+1
Step 3: Divide both sides by -1.
−x
−1
=
y+1
−1
x=−y−1
 
        
             
        
        
        
Answer:
this will probably help
Step-by-step explanation: