Answer:
k = 4
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
- Subtract Property of Equality
Step-by-step explanation:
<u>Step 1: Define</u>
5k + (-7) = 13
<u>Step 2: Solve for </u><em><u>k</u></em>
- Simplify equation: 5k - 7 = 13
- Addition Property of Equality: 5k - 7 + 7 = 13 + 7
- Simplify equation: 5k = 20
- Division Property of Equality: 5k/5 = 20/5
- Simplify equation: k = 4
<u>Step 3: Check</u>
<em>Plug in k into the original equation to verify it's a solution.</em>
- Substitute in <em>k</em>: 5(4) + (-7) = 13
- Multiply: 20 + (-7) = 13
- Add: 13 = 13
Here we see that 13 does indeed equal 13.
∴ k = 4 is the solution to the equation.
Step-by-step explanation:
You need to write in a Word doc or in your notebook which system you have chosen (I don't know which system are we talking about) and write the parts of the system like in a concept map i guess
Answer:
Step-by-step explanation:
hello :
the area is : (3x+4y)²cm² when :x=4 and y=1, the area is : (3(4)+4(1))²cm² =16²cm2=256cm²
