Answer:
y + x = 7
Step-by-step explanation:
Standard form should be
y - 9 = -(x+2)
y = -x -2 +9
y + x = 7
 
        
                    
             
        
        
        
Answer:
$2000 was invested at 5% and $5000 was invested at 8%.
Step-by-step explanation:
Assuming the interest is simple interest.
<u>Simple Interest Formula</u>
I = Prt
where:	
- I = interest earned.
- P = principal invested.
- r = interest rate (in decimal form).
- t = time (in years).
Given:
- Total P = $7000
- P₁ = principal invested at 5%
- P₂ = principal invested at 8%
- Total interest = $500
- r₁ = 5% = 0.05
- r₂ = 8% = 0.08
- t = 1 year
Create two equations from the given information:


Rewrite Equation 1 to make P₁ the subject:

Substitute this into Equation 2 and solve for P₂:





Substitute the found value of P₂ into Equation 1 and solve for P₁:



$2000 was invested at 5% and $5000 was invested at 8%.
Learn more about simple interest here:
brainly.com/question/27743947
brainly.com/question/28350785
 
        
             
        
        
        
Answer:
no, yes, yes , no, yes
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Option D - x = 3 3/5
Step-by-step explanation:
Lets make the left side into an improper fraction : 
2 2/5 = 12/5 
Now let's make both fraction into equivalent ones but with the same denominator : 
2/3 = 10/15 
12/5 = 36/15 
Now we substitute the equivalent values back into the equation : 
10/15 × x = 36/15 
Now we multiply both sides by 15 to remove the denominators: 
10 × x = 36 
Now we divide both sides by 10 and simplify : 
x = 36/10
x = 18/5 
x = 3 3/5 
So our answer will be Option D  
Hope this helped and brainliest please