All you need to do is add up all the sides to find the perimeter.
300*2=600+450+650=1700m
 
Final answer: 1700m 
Ps.- You should write in pencil incase you need to re-write answers 
        
             
        
        
        
15 the doctor did not make a mistake because (the rule 5 and below don't round up 5 up round up) 
16 nope becaue she took longer than the other girls to run the 200 meter dash
        
                    
             
        
        
        
The answer is 3/4 because if u count it up it equals 36/48 and then u just have to simplify
        
             
        
        
        
Answer:
42
Step-by-step explanation:
The answer to life the universe and everything is 42
 
        
             
        
        
        
Answer:
(-4, -8)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality
<u>Algebra I</u>
- Terms/Coefficients
- Solving systems of equations using substitution/elimination
Step-by-step explanation:
<u>Step 1: Define Systems</u>
x - 2y = 12
5x + 3y = -44
<u>Step 2: Rewrite Systems</u>
x - 2y = 12
- [Multiplication Property of Equality] Multiply everything by -5:                  -5x + 10y = -60
<u>Step 3: Redefine Systems</u>
-5x + 10y = -60
5x + 3y = -44
<u>Step 4: Solve for </u><em><u>y</u></em>
<em>Elimination</em>
- Combine 2 equations:                                                                                   13y = -104
- [Division Property of Equality] Divide 13 on both sides:                              y = -8
<u>Step 5: Solve for </u><em><u>x</u></em>
- Define original equation:                                                                               x - 2y = 12
- Substitute in <em>y</em>:                                                                                                x - 2(-8) = 12
- Multiply:                                                                                                           x + 16 = 12
- [Subtraction Property of Equality] Subtract 16 on both sides:                      x = -4